18939962 has 16 divisors (see below), whose sum is σ = 28994112. Its totient is φ = 9276960.

The previous prime is 18939959. The next prime is 18939983. The reversal of 18939962 is 26993981.

It is a super-2 number, since 2×18939962² = 717444321122888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37403 + ... + 37905.

It is an arithmetic number, because the mean of its divisors is an integer number (1812132).

Almost surely, 2^18939962 is an apocalyptic number.

18939962 is a deficient number, since it is larger than the sum of its proper divisors (10054150).

18939962 is a wasteful number, since it uses less digits than its factorization.

18939962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its digits is 209952, while the sum is 47.

The square root of 18939962 is about 4352.0066635978. The cubic root of 18939962 is about 266.5588060315.

The spelling of 18939962 in words is "eighteen million, nine hundred thirty-nine thousand, nine hundred sixty-two".