180457147 has 4 divisors (see below), whose sum is σ = 194338480. Its totient is φ = 166575816.

The previous prime is 180457139. The next prime is 180457153. The reversal of 180457147 is 741754081.

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

It is a cyclic number.

It is not a de Polignac number, because 180457147 - 2³ = 180457139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180457157) 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, 6940647 + ... + 6940672.

It is an arithmetic number, because the mean of its divisors is an integer number (48584620).

Almost surely, 2^180457147 is an apocalyptic number.

180457147 is a deficient number, since it is larger than the sum of its proper divisors (13881333).

180457147 is a wasteful number, since it uses less digits than its factorization.

180457147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13881332.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 180457147 is about 13433.4339243546. The cubic root of 180457147 is about 565.0992041327.

The spelling of 180457147 in words is "one hundred eighty million, four hundred fifty-seven thousand, one hundred forty-seven".