28907519413 has 2 divisors, whose sum is σ = 28907519414. Its totient is φ = 28907519412.

The previous prime is 28907519411. The next prime is 28907519449. The reversal of 28907519413 is 31491570982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18982777284 + 9924742129 = 137778^2 + 99623^2 .

It is a cyclic number.

It is not a de Polignac number, because 28907519413 - 2¹ = 28907519411 is a prime.

It is a super-2 number, since 2×28907519413² (a number of 22 digits) contains 22 as substring.

Together with 28907519411, 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 (28907519411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14453759706 + 14453759707.

It is an arithmetic number, because the mean of its divisors is an integer number (14453759707).

Almost surely, 2^28907519413 is an apocalyptic number.

It is an amenable number.

28907519413 is a deficient number, since it is larger than the sum of its proper divisors (1).

28907519413 is an equidigital number, since it uses as much as digits as its factorization.

28907519413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 28907519413 in words is "twenty-eight billion, nine hundred seven million, five hundred nineteen thousand, four hundred thirteen".