18775825396 has 12 divisors (see below), whose sum is σ = 32873998948. Its totient is φ = 9383254272.

The previous prime is 18775825381. The next prime is 18775825433. The reversal of 18775825396 is 69352857781.

It can be written as a sum of positive squares in 2 ways, for example, as 13488499600 + 5287325796 = 116140^2 + 72714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155531 + ... + 1171666.

Almost surely, 2^18775825396 is an apocalyptic number.

It is an amenable number.

18775825396 is a deficient number, since it is larger than the sum of its proper divisors (14098173552).

18775825396 is a wasteful number, since it uses less digits than its factorization.

18775825396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329218 (or 2329216 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 61.

The spelling of 18775825396 in words is "eighteen billion, seven hundred seventy-five million, eight hundred twenty-five thousand, three hundred ninety-six".