18354944 has 18 divisors (see below), whose sum is σ = 36638700. Its totient is φ = 9177344.

The previous prime is 18354913. The next prime is 18354949. The reversal of 18354944 is 44945381.

It is a junction number, because it is equal to n+sod(n) for n = 18354898 and 18354907.

It is not an unprimeable number, because it can be changed into a prime (18354949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35594 + ... + 36105.

Almost surely, 2^18354944 is an apocalyptic number.

It is an amenable number.

18354944 is a deficient number, since it is larger than the sum of its proper divisors (18283756).

18354944 is an frugal number, since it uses more digits than its factorization.

18354944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71715 (or 71701 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 18354944 is about 4284.2670318270. The cubic root of 18354944 is about 263.7855620160.

The spelling of 18354944 in words is "eighteen million, three hundred fifty-four thousand, nine hundred forty-four".