180999834408 has 48 divisors (see below), whose sum is σ = 490281061920. Its totient is φ = 60324271776.

The previous prime is 180999834397. The next prime is 180999834409. The reversal of 180999834408 is 804438999081.

180999834408 is a `hidden beast` number, since 18 + 0 + 99 + 98 + 3 + 440 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (180999834409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307035 + ... + 675477.

It is an arithmetic number, because the mean of its divisors is an integer number (10214188790).

Almost surely, 2^180999834408 is an apocalyptic number.

180999834408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

180999834408 is an abundant number, since it is smaller than the sum of its proper divisors (309281227512).

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

180999834408 is a wasteful number, since it uses less digits than its factorization.

180999834408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375278 (or 375271 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 180999834408 in words is "one hundred eighty billion, nine hundred ninety-nine million, eight hundred thirty-four thousand, four hundred eight".