182139457 has 4 divisors (see below), whose sum is σ = 182488240. Its totient is φ = 181790676.

The previous prime is 182139439. The next prime is 182139467. The reversal of 182139457 is 754931281.

182139457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 182139457 - 2²⁷ = 47921729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182139467) 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, 173607 + ... + 174652.

It is an arithmetic number, because the mean of its divisors is an integer number (45622060).

Almost surely, 2^182139457 is an apocalyptic number.

It is an amenable number.

182139457 is a deficient number, since it is larger than the sum of its proper divisors (348783).

182139457 is an equidigital number, since it uses as much as digits as its factorization.

182139457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348782.

The product of its digits is 60480, while the sum is 40.

The square root of 182139457 is about 13495.9051937986. The cubic root of 182139457 is about 566.8498192666.

The spelling of 182139457 in words is "one hundred eighty-two million, one hundred thirty-nine thousand, four hundred fifty-seven".