19892818086 has 16 divisors (see below), whose sum is σ = 39787281264. Its totient is φ = 6630665184.

The previous prime is 19892818027. The next prime is 19892818093. The reversal of 19892818086 is 68081829891.

It is a super-2 number, since 2×19892818086² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 135276 + ... + 241008.

It is an arithmetic number, because the mean of its divisors is an integer number (2486705079).

Almost surely, 2^19892818086 is an apocalyptic number.

19892818086 is an abundant number, since it is smaller than the sum of its proper divisors (19894463178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19892818086 is a wasteful number, since it uses less digits than its factorization.

19892818086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137095.

The product of its (nonzero) digits is 3981312, while the sum is 60.

The spelling of 19892818086 in words is "nineteen billion, eight hundred ninety-two million, eight hundred eighteen thousand, eighty-six".