18039500454 has 16 divisors (see below), whose sum is σ = 36150734592. Its totient is φ = 6001211208.

The previous prime is 18039500447. The next prime is 18039500471. The reversal of 18039500454 is 45400593081.

It is a super-2 number, since 2×18039500454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2985634 + ... + 2991669.

It is an arithmetic number, because the mean of its divisors is an integer number (2259420912).

Almost surely, 2^18039500454 is an apocalyptic number.

18039500454 is an abundant number, since it is smaller than the sum of its proper divisors (18111234138).

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

18039500454 is a wasteful number, since it uses less digits than its factorization.

18039500454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977811.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 18039500454 in words is "eighteen billion, thirty-nine million, five hundred thousand, four hundred fifty-four".