18942965387 has 8 divisors (see below), whose sum is σ = 19663061040. Its totient is φ = 18227329120.

The previous prime is 18942965383. The next prime is 18942965497. The reversal of 18942965387 is 78356924981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18942965387 - 2² = 18942965383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18942965383) 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 7 ways as a sum of consecutive naturals, for example, 1106189 + ... + 1123182.

It is an arithmetic number, because the mean of its divisors is an integer number (2457882630).

Almost surely, 2^18942965387 is an apocalyptic number.

18942965387 is a deficient number, since it is larger than the sum of its proper divisors (720095653).

18942965387 is a wasteful number, since it uses less digits than its factorization.

18942965387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229693.

The product of its digits is 26127360, while the sum is 62.

The spelling of 18942965387 in words is "eighteen billion, nine hundred forty-two million, nine hundred sixty-five thousand, three hundred eighty-seven".