18949655392 has 24 divisors (see below), whose sum is σ = 37310204232. Its totient is φ = 9474048000.

The previous prime is 18949655321. The next prime is 18949655393. The reversal of 18949655392 is 29355694981.

It is a self number, because there is not a number n which added to its sum of digits gives 18949655392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18949655393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727392 + ... + 752992.

It is an arithmetic number, because the mean of its divisors is an integer number (1554591843).

Almost surely, 2^18949655392 is an apocalyptic number.

It is an amenable number.

18949655392 is a deficient number, since it is larger than the sum of its proper divisors (18360548840).

18949655392 is a wasteful number, since it uses less digits than its factorization.

18949655392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48742 (or 48734 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 61.

The spelling of 18949655392 in words is "eighteen billion, nine hundred forty-nine million, six hundred fifty-five thousand, three hundred ninety-two".