13157789 has 2 divisors, whose sum is σ = 13157790. Its totient is φ = 13157788.

The previous prime is 13157783. The next prime is 13157797. The reversal of 13157789 is 98775131.

13157789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9672100 + 3485689 = 3110^2 + 1867^2 .

It is a cyclic number.

It is not a de Polignac number, because 13157789 - 2⁴ = 13157773 is a prime.

It is a super-2 number, since 2×13157789² = 346254822737042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13157783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6578894 + 6578895.

It is an arithmetic number, because the mean of its divisors is an integer number (6578895).

Almost surely, 2^13157789 is an apocalyptic number.

It is an amenable number.

13157789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13157789 is an equidigital number, since it uses as much as digits as its factorization.

13157789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 41.

The square root of 13157789 is about 3627.3666757029. The cubic root of 13157789 is about 236.0809654687.

The spelling of 13157789 in words is "thirteen million, one hundred fifty-seven thousand, seven hundred eighty-nine".