1206361139 has 2 divisors, whose sum is σ = 1206361140. Its totient is φ = 1206361138.

The previous prime is 1206361127. The next prime is 1206361171. The reversal of 1206361139 is 9311636021.

It is an a-pointer prime, because the next prime (1206361171) can be obtained adding 1206361139 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206361139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1206361439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603180569 + 603180570.

It is an arithmetic number, because the mean of its divisors is an integer number (603180570).

Almost surely, 2^1206361139 is an apocalyptic number.

1206361139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206361139 is an equidigital number, since it uses as much as digits as its factorization.

1206361139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1206361139 is about 34732.7099288265. The cubic root of 1206361139 is about 1064.5329607413.

The spelling of 1206361139 in words is "one billion, two hundred six million, three hundred sixty-one thousand, one hundred thirty-nine".