180413857 has 8 divisors (see below), whose sum is σ = 196075880. Its totient is φ = 165006720.

The previous prime is 180413851. The next prime is 180413861. The reversal of 180413857 is 758314081.

It can be written as a sum of positive squares in 4 ways, for example, as 55890576 + 124523281 = 7476^2 + 11159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180413857 - 2⁷ = 180413729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (180413851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62244 + ... + 65077.

It is an arithmetic number, because the mean of its divisors is an integer number (24509485).

Almost surely, 2^180413857 is an apocalyptic number.

It is an amenable number.

180413857 is a deficient number, since it is larger than the sum of its proper divisors (15662023).

180413857 is a wasteful number, since it uses less digits than its factorization.

180413857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127443.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 180413857 is about 13431.8225494532. The cubic root of 180413857 is about 565.0540131619.

The spelling of 180413857 in words is "one hundred eighty million, four hundred thirteen thousand, eight hundred fifty-seven".