181818602398 has 24 divisors (see below), whose sum is σ = 285371663976. Its totient is φ = 86874229200.

The previous prime is 181818602389. The next prime is 181818602423. The reversal of 181818602398 is 893206818181.

It is a super-2 number, since 2×181818602398² (a number of 23 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 11 ways as a sum of consecutive naturals, for example, 1041553 + ... + 1203523.

It is an arithmetic number, because the mean of its divisors is an integer number (11890485999).

Almost surely, 2^181818602398 is an apocalyptic number.

181818602398 is a deficient number, since it is larger than the sum of its proper divisors (103553061578).

181818602398 is a wasteful number, since it uses less digits than its factorization.

181818602398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163080 (or 163057 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 55.

The spelling of 181818602398 in words is "one hundred eighty-one billion, eight hundred eighteen million, six hundred two thousand, three hundred ninety-eight".