18469299426 has 64 divisors (see below), whose sum is σ = 40832035200. Its totient is φ = 5543064576.

The previous prime is 18469299421. The next prime is 18469299449. The reversal of 18469299426 is 62499296481.

It is a super-2 number, since 2×18469299426² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18469299426.

It is not an unprimeable number, because it can be changed into a prime (18469299421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293781 + ... + 351063.

It is an arithmetic number, because the mean of its divisors is an integer number (638000550).

Almost surely, 2^18469299426 is an apocalyptic number.

18469299426 is an abundant number, since it is smaller than the sum of its proper divisors (22362735774).

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

18469299426 is a wasteful number, since it uses less digits than its factorization.

18469299426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57443.

The product of its digits is 13436928, while the sum is 60.

The spelling of 18469299426 in words is "eighteen billion, four hundred sixty-nine million, two hundred ninety-nine thousand, four hundred twenty-six".