180968994 has 24 divisors (see below), whose sum is σ = 395701020. Its totient is φ = 59768928.

The previous prime is 180968987. The next prime is 180968999. The reversal of 180968994 is 499869081.

It can be written as a sum of positive squares in 2 ways, for example, as 180552969 + 416025 = 13437^2 + 645^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180968994.

It is not an unprimeable number, because it can be changed into a prime (180968999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44157 + ... + 48080.

Almost surely, 2^180968994 is an apocalyptic number.

180968994 is an abundant number, since it is smaller than the sum of its proper divisors (214732026).

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

180968994 is a wasteful number, since it uses less digits than its factorization.

180968994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92354 (or 92351 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 180968994 is about 13452.4716688050. The cubic root of 180968994 is about 565.6329805209.

The spelling of 180968994 in words is "one hundred eighty million, nine hundred sixty-eight thousand, nine hundred ninety-four".