19914986 has 16 divisors (see below), whose sum is σ = 36766464. Its totient is φ = 7878384.

The previous prime is 19914959. The next prime is 19915001. The reversal of 19914986 is 68941991.

It is a self number, because there is not a number n which added to its sum of digits gives 19914986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54530 + ... + 54893.

It is an arithmetic number, because the mean of its divisors is an integer number (2297904).

Almost surely, 2^19914986 is an apocalyptic number.

19914986 is a deficient number, since it is larger than the sum of its proper divisors (16851478).

19914986 is a wasteful number, since it uses less digits than its factorization.

19914986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109445.

The product of its digits is 139968, while the sum is 47.

The square root of 19914986 is about 4462.6209787523. The cubic root of 19914986 is about 271.0566095888.

The spelling of 19914986 in words is "nineteen million, nine hundred fourteen thousand, nine hundred eighty-six".