18353552398 has 32 divisors (see below), whose sum is σ = 29790339840. Its totient is φ = 8453833920.

The previous prime is 18353552333. The next prime is 18353552411. The reversal of 18353552398 is 89325535381.

It is a super-2 number, since 2×18353552398² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150361 + ... + 243547.

It is an arithmetic number, because the mean of its divisors is an integer number (930948120).

Almost surely, 2^18353552398 is an apocalyptic number.

18353552398 is a deficient number, since it is larger than the sum of its proper divisors (11436787442).

18353552398 is a wasteful number, since it uses less digits than its factorization.

18353552398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93352.

The product of its digits is 3888000, while the sum is 52.

The spelling of 18353552398 in words is "eighteen billion, three hundred fifty-three million, five hundred fifty-two thousand, three hundred ninety-eight".