180723456990 has 48 divisors (see below), whose sum is σ = 487283994288. Its totient is φ = 48192921216.

The previous prime is 180723456971. The next prime is 180723457027. The reversal of 180723456990 is 99654327081.

180723456990 is a `hidden beast` number, since 1 + 8 + 0 + 72 + 3 + 4 + 569 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37183467 + ... + 37188326.

It is an arithmetic number, because the mean of its divisors is an integer number (10151749881).

It is a 1-persistent number, because it is pandigital, but 2⋅180723456990 = 361446913980 is not.

Almost surely, 2^180723456990 is an apocalyptic number.

180723456990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180723456990 is an abundant number, since it is smaller than the sum of its proper divisors (306560537298).

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

180723456990 is an equidigital number, since it uses as much as digits as its factorization.

180723456990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74371815 (or 74371803 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 180723456990 in words is "one hundred eighty billion, seven hundred twenty-three million, four hundred fifty-six thousand, nine hundred ninety".