180152461 has 4 divisors (see below), whose sum is σ = 180279612. Its totient is φ = 180025312.

The previous prime is 180152447. The next prime is 180152503. The reversal of 180152461 is 164251081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130096836 + 50055625 = 11406^2 + 7075^2 .

It is a cyclic number.

It is not a de Polignac number, because 180152461 - 2⁷ = 180152333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180152411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61426 + ... + 64291.

It is an arithmetic number, because the mean of its divisors is an integer number (45069903).

Almost surely, 2^180152461 is an apocalyptic number.

It is an amenable number.

180152461 is a deficient number, since it is larger than the sum of its proper divisors (127151).

180152461 is a wasteful number, since it uses less digits than its factorization.

180152461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127150.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 180152461 is about 13422.0885483594. The cubic root of 180152461 is about 564.7809848909.

The spelling of 180152461 in words is "one hundred eighty million, one hundred fifty-two thousand, four hundred sixty-one".