19896018 has 32 divisors (see below), whose sum is σ = 42482880. Its totient is φ = 6190080.

The previous prime is 19895987. The next prime is 19896053. The reversal of 19896018 is 81069891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12618 + ... + 14106.

It is an arithmetic number, because the mean of its divisors is an integer number (1327590).

Almost surely, 2^19896018 is an apocalyptic number.

19896018 is an abundant number, since it is smaller than the sum of its proper divisors (22586862).

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

19896018 is a wasteful number, since it uses less digits than its factorization.

19896018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 19896018 is about 4460.4952639813. The cubic root of 19896018 is about 270.9705264261.

The spelling of 19896018 in words is "nineteen million, eight hundred ninety-six thousand, eighteen".