18895150446 has 32 divisors (see below), whose sum is σ = 40188039840. Its totient is φ = 5901997056.

The previous prime is 18895150441. The next prime is 18895150447. The reversal of 18895150446 is 64405159881.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18895150441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381111 + ... + 427826.

It is an arithmetic number, because the mean of its divisors is an integer number (1255876245).

Almost surely, 2^18895150446 is an apocalyptic number.

18895150446 is an abundant number, since it is smaller than the sum of its proper divisors (21292889394).

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

18895150446 is a wasteful number, since it uses less digits than its factorization.

18895150446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809188.

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 18895150446 in words is "eighteen billion, eight hundred ninety-five million, one hundred fifty thousand, four hundred forty-six".