18469031451 has 16 divisors (see below), whose sum is σ = 26688558624. Its totient is φ = 11293161984.

The previous prime is 18469031443. The next prime is 18469031461. The reversal of 18469031451 is 15413096481.

It is not a de Polignac number, because 18469031451 - 2³ = 18469031443 is a prime.

It is a super-2 number, since 2×18469031451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18469031461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502046 + ... + 1514291.

It is an arithmetic number, because the mean of its divisors is an integer number (1668034914).

Almost surely, 2^18469031451 is an apocalyptic number.

18469031451 is a deficient number, since it is larger than the sum of its proper divisors (8219527173).

18469031451 is a wasteful number, since it uses less digits than its factorization.

18469031451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016510.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 18469031451 in words is "eighteen billion, four hundred sixty-nine million, thirty-one thousand, four hundred fifty-one".