19886749962 has 16 divisors (see below), whose sum is σ = 40743585792. Its totient is φ = 6467235680.

The previous prime is 19886749919. The next prime is 19886749979. The reversal of 19886749962 is 26994768891.

It is a super-2 number, since 2×19886749962² (a number of 21 digits) contains 22 as substring.

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, 40419978 + ... + 40420469.

It is an arithmetic number, because the mean of its divisors is an integer number (2546474112).

Almost surely, 2^19886749962 is an apocalyptic number.

19886749962 is an abundant number, since it is smaller than the sum of its proper divisors (20856835830).

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

19886749962 is a wasteful number, since it uses less digits than its factorization.

19886749962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80840493.

The product of its digits is 94058496, while the sum is 69.

The spelling of 19886749962 in words is "nineteen billion, eight hundred eighty-six million, seven hundred forty-nine thousand, nine hundred sixty-two".