239645731238 has 4 divisors (see below), whose sum is σ = 359468596860. Its totient is φ = 119822865618.

The previous prime is 239645731231. The next prime is 239645731243. The reversal of 239645731238 is 832137546932.

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

It is a self number, because there is not a number n which added to its sum of digits gives 239645731238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239645731231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59911432808 + ... + 59911432811.

It is an arithmetic number, because the mean of its divisors is an integer number (89867149215).

Almost surely, 2^239645731238 is an apocalyptic number.

239645731238 is a deficient number, since it is larger than the sum of its proper divisors (119822865622).

239645731238 is a wasteful number, since it uses less digits than its factorization.

239645731238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119822865621.

The product of its digits is 6531840, while the sum is 53.

The spelling of 239645731238 in words is "two hundred thirty-nine billion, six hundred forty-five million, seven hundred thirty-one thousand, two hundred thirty-eight".