18485454 has 16 divisors (see below), whose sum is σ = 39814992. Its totient is φ = 5687808.

The previous prime is 18485449. The next prime is 18485473. The reversal of 18485454 is 45458481.

It is a super-2 number, since 2×18485454² = 683424019172232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

18485454 is a modest number, since divided by 5454 gives 1848 as remainder.

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, 118419 + ... + 118574.

It is an arithmetic number, because the mean of its divisors is an integer number (2488437).

Almost surely, 2^18485454 is an apocalyptic number.

18485454 is an abundant number, since it is smaller than the sum of its proper divisors (21329538).

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

18485454 is a wasteful number, since it uses less digits than its factorization.

18485454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237011.

The product of its digits is 102400, while the sum is 39.

The square root of 18485454 is about 4299.4713628538. The cubic root of 18485454 is about 264.4092882331.

The spelling of 18485454 in words is "eighteen million, four hundred eighty-five thousand, four hundred fifty-four".