15397730894 has 48 divisors (see below), whose sum is σ = 29300644800. Its totient is φ = 6014264256.

The previous prime is 15397730863. The next prime is 15397730911. The reversal of 15397730894 is 49803779351.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24152 + ... + 177140.

It is an arithmetic number, because the mean of its divisors is an integer number (610430100).

Almost surely, 2^15397730894 is an apocalyptic number.

15397730894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15397730894 is a deficient number, since it is larger than the sum of its proper divisors (13902913906).

15397730894 is a wasteful number, since it uses less digits than its factorization.

15397730894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153097 (or 153090 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 15397730894 in words is "fifteen billion, three hundred ninety-seven million, seven hundred thirty thousand, eight hundred ninety-four".