2316381538 has 4 divisors (see below), whose sum is σ = 3474572310. Its totient is φ = 1158190768.

The previous prime is 2316381533. The next prime is 2316381539. The reversal of 2316381538 is 8351836132.

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

It can be written as a sum of positive squares in only one way, i.e., 1455956649 + 860424889 = 38157^2 + 29333^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2316381538.

It is not an unprimeable number, because it can be changed into a prime (2316381533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579095383 + ... + 579095386.

Almost surely, 2^2316381538 is an apocalyptic number.

2316381538 is a deficient number, since it is larger than the sum of its proper divisors (1158190772).

2316381538 is a wasteful number, since it uses less digits than its factorization.

2316381538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158190771.

The product of its digits is 103680, while the sum is 40.

The square root of 2316381538 is about 48128.8015433586. The cubic root of 2316381538 is about 1323.1325848317.

The spelling of 2316381538 in words is "two billion, three hundred sixteen million, three hundred eighty-one thousand, five hundred thirty-eight".