180749998 has 16 divisors (see below), whose sum is σ = 318524976. Its totient is φ = 75839040.

The previous prime is 180749993. The next prime is 180749999. The reversal of 180749998 is 899947081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180749993) 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 7 ways as a sum of consecutive naturals, for example, 315711 + ... + 316282.

It is an arithmetic number, because the mean of its divisors is an integer number (19907811).

Almost surely, 2^180749998 is an apocalyptic number.

180749998 is a deficient number, since it is larger than the sum of its proper divisors (137774978).

180749998 is a wasteful number, since it uses less digits than its factorization.

180749998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632019.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 180749998 is about 13444.3295853680. The cubic root of 180749998 is about 565.4047252861.

The spelling of 180749998 in words is "one hundred eighty million, seven hundred forty-nine thousand, nine hundred ninety-eight".