18291827946 has 32 divisors (see below), whose sum is σ = 43158601728. Its totient is φ = 5057647920.

The previous prime is 18291827929. The next prime is 18291827947. The reversal of 18291827946 is 64972819281.

It is not an unprimeable number, because it can be changed into a prime (18291827947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7023210 + ... + 7025813.

It is an arithmetic number, because the mean of its divisors is an integer number (1348706304).

Almost surely, 2^18291827946 is an apocalyptic number.

18291827946 is an abundant number, since it is smaller than the sum of its proper divisors (24866773782).

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

18291827946 is a wasteful number, since it uses less digits than its factorization.

18291827946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14049066.

The product of its digits is 3483648, while the sum is 57.

The spelling of 18291827946 in words is "eighteen billion, two hundred ninety-one million, eight hundred twenty-seven thousand, nine hundred forty-six".