18729266842 has 32 divisors (see below), whose sum is σ = 33080826240. Its totient is φ = 7840480320.

The previous prime is 18729266819. The next prime is 18729266851. The reversal of 18729266842 is 24866292781.

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 15 ways as a sum of consecutive naturals, for example, 50968 + ... + 200140.

It is an arithmetic number, because the mean of its divisors is an integer number (1033775820).

Almost surely, 2^18729266842 is an apocalyptic number.

18729266842 is a deficient number, since it is larger than the sum of its proper divisors (14351559398).

18729266842 is a wasteful number, since it uses less digits than its factorization.

18729266842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149638.

The product of its digits is 4644864, while the sum is 55.

The spelling of 18729266842 in words is "eighteen billion, seven hundred twenty-nine million, two hundred sixty-six thousand, eight hundred forty-two".