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1378520413 is a prime number
BaseRepresentation
bin101001000101010…
…1000110101011101
310120001221002111121
41102022220311131
510310400123123
6344442250541
746106141644
oct12212506535
93501832447
101378520413
11648158876
123257b6a51
1318c79aa6a
14d112035b
158105075d
hex522a8d5d

1378520413 has 2 divisors, whose sum is σ = 1378520414. Its totient is φ = 1378520412.

The previous prime is 1378520411. The next prime is 1378520443. The reversal of 1378520413 is 3140258731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214731609 + 163788804 = 34853^2 + 12798^2 .

It is a cyclic number.

It is not a de Polignac number, because 1378520413 - 21 = 1378520411 is a prime.

It is a super-4 number, since 4×13785204134 (a number of 38 digits) contains 4444 as substring.

Together with 1378520411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378520411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689260206 + 689260207.

It is an arithmetic number, because the mean of its divisors is an integer number (689260207).

Almost surely, 21378520413 is an apocalyptic number.

It is an amenable number.

1378520413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378520413 is an equidigital number, since it uses as much as digits as its factorization.

1378520413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1378520413 is about 37128.4313296428. The cubic root of 1378520413 is about 1112.9382460240.

The spelling of 1378520413 in words is "one billion, three hundred seventy-eight million, five hundred twenty thousand, four hundred thirteen".