18489454 has 16 divisors (see below), whose sum is σ = 29062656. Its totient is φ = 8811000.

The previous prime is 18489433. The next prime is 18489463. The reversal of 18489454 is 45498481.

It is a self number, because there is not a number n which added to its sum of digits gives 18489454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1929 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (1816416).

Almost surely, 2^18489454 is an apocalyptic number.

18489454 is a deficient number, since it is larger than the sum of its proper divisors (10573202).

18489454 is a wasteful number, since it uses less digits than its factorization.

18489454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551.

The product of its digits is 184320, while the sum is 43.

The square root of 18489454 is about 4299.9365111592. The cubic root of 18489454 is about 264.4283583783.

The spelling of 18489454 in words is "eighteen million, four hundred eighty-nine thousand, four hundred fifty-four".