18966071942 has 32 divisors (see below), whose sum is σ = 29240870400. Its totient is φ = 9222565248.

The previous prime is 18966071939. The next prime is 18966071983. The reversal of 18966071942 is 24917066981.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8469659 + ... + 8471897.

It is an arithmetic number, because the mean of its divisors is an integer number (913777200).

Almost surely, 2^18966071942 is an apocalyptic number.

18966071942 is a deficient number, since it is larger than the sum of its proper divisors (10274798458).

18966071942 is a wasteful number, since it uses less digits than its factorization.

18966071942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 18966071942 in words is "eighteen billion, nine hundred sixty-six million, seventy-one thousand, nine hundred forty-two".