19999053862 has 16 divisors (see below), whose sum is σ = 30695022000. Its totient is φ = 9769580640.

The previous prime is 19999053857. The next prime is 19999053869. The reversal of 19999053862 is 26835099991.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a self number, because there is not a number n which added to its sum of digits gives 19999053862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19999053869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531912 + ... + 568267.

It is an arithmetic number, because the mean of its divisors is an integer number (1918438875).

Almost surely, 2^19999053862 is an apocalyptic number.

19999053862 is a deficient number, since it is larger than the sum of its proper divisors (10695968138).

19999053862 is a wasteful number, since it uses less digits than its factorization.

19999053862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100391.

The product of its (nonzero) digits is 9447840, while the sum is 61.

The spelling of 19999053862 in words is "nineteen billion, nine hundred ninety-nine million, fifty-three thousand, eight hundred sixty-two".