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1906699061 is a prime number
BaseRepresentation
bin111000110100101…
…1110101100110101
311220212210100101202
41301221132230311
512401103332221
6513111102245
765151450251
oct16151365465
94825710352
101906699061
11899311253
12452671985
1324503aac7
1414132d261
15b25d2d0b
hex71a5eb35

1906699061 has 2 divisors, whose sum is σ = 1906699062. Its totient is φ = 1906699060.

The previous prime is 1906699043. The next prime is 1906699079. The reversal of 1906699061 is 1609966091.

It is a balanced prime because it is at equal distance from previous prime (1906699043) and next prime (1906699079).

It can be written as a sum of positive squares in only one way, i.e., 1276990225 + 629708836 = 35735^2 + 25094^2 .

It is an emirp because it is prime and its reverse (1609966091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1906699061 - 210 = 1906698037 is a prime.

1906699061 is a strobogrammatic number because it is the same when read upside-down.

It is a junction number, because it is equal to n+sod(n) for n = 1906698997 and 1906699015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906696061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953349530 + 953349531.

It is an arithmetic number, because the mean of its divisors is an integer number (953349531).

Almost surely, 21906699061 is an apocalyptic number.

It is an amenable number.

1906699061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906699061 is an equidigital number, since it uses as much as digits as its factorization.

1906699061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 1906699061 is about 43665.7653202140. The cubic root of 1906699061 is about 1240.0162721156.

The spelling of 1906699061 in words is "one billion, nine hundred six million, six hundred ninety-nine thousand, sixty-one".