18462153408 has 56 divisors (see below), whose sum is σ = 51721188912. Its totient is φ = 5792047104.

The previous prime is 18462153407. The next prime is 18462153427. The reversal of 18462153408 is 80435126481.

It is a happy number.

It is a super-2 number, since 2×18462153408² (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 18462153408.

It is not an unprimeable number, because it can be changed into a prime (18462153407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824885 + ... + 2831412.

Almost surely, 2^18462153408 is an apocalyptic number.

It is an amenable number.

18462153408 is an abundant number, since it is smaller than the sum of its proper divisors (33259035504).

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

18462153408 is a wasteful number, since it uses less digits than its factorization.

18462153408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656329 (or 5656319 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

Adding to 18462153408 its reverse (80435126481), we get a palindrome (98897279889).

The spelling of 18462153408 in words is "eighteen billion, four hundred sixty-two million, one hundred fifty-three thousand, four hundred eight".