15294924889 has 2 divisors, whose sum is σ = 15294924890. Its totient is φ = 15294924888.

The previous prime is 15294924857. The next prime is 15294924901. The reversal of 15294924889 is 98842949251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14808942864 + 485982025 = 121692^2 + 22045^2 .

It is a cyclic number.

It is not a de Polignac number, because 15294924889 - 2⁵ = 15294924857 is a prime.

It is a super-4 number, since 4×15294924889⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (15294924809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7647462444 + 7647462445.

It is an arithmetic number, because the mean of its divisors is an integer number (7647462445).

Almost surely, 2^15294924889 is an apocalyptic number.

It is an amenable number.

15294924889 is a deficient number, since it is larger than the sum of its proper divisors (1).

15294924889 is an equidigital number, since it uses as much as digits as its factorization.

15294924889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 61.

The spelling of 15294924889 in words is "fifteen billion, two hundred ninety-four million, nine hundred twenty-four thousand, eight hundred eighty-nine".