180940877 has 16 divisors (see below), whose sum is σ = 207108720. Its totient is φ = 157142016.

The previous prime is 180940871. The next prime is 180940891. The reversal of 180940877 is 778049081.

It can be written as a sum of positive squares in 8 ways, for example, as 7070281 + 173870596 = 2659^2 + 13186^2 .

It is not a de Polignac number, because 180940877 - 2⁸ = 180940621 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180940871) 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 15 ways as a sum of consecutive naturals, for example, 62453 + ... + 65285.

It is an arithmetic number, because the mean of its divisors is an integer number (12944295).

Almost surely, 2^180940877 is an apocalyptic number.

180940877 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

180940877 is a deficient number, since it is larger than the sum of its proper divisors (26167843).

180940877 is an equidigital number, since it uses as much as digits as its factorization.

180940877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 180940877 is about 13451.4265786198. The cubic root of 180940877 is about 565.6036850305.

The spelling of 180940877 in words is "one hundred eighty million, nine hundred forty thousand, eight hundred seventy-seven".