308142944986 has 4 divisors (see below), whose sum is σ = 462214417482. Its totient is φ = 154071472492.

The previous prime is 308142944983. The next prime is 308142944999. The reversal of 308142944986 is 689449241803.

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., 180858825625 + 127284119361 = 425275^2 + 356769^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 308142944986.

It is not an unprimeable number, because it can be changed into a prime (308142944983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77035736245 + ... + 77035736248.

Almost surely, 2^308142944986 is an apocalyptic number.

308142944986 is a deficient number, since it is larger than the sum of its proper divisors (154071472496).

308142944986 is a wasteful number, since it uses less digits than its factorization.

308142944986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154071472495.

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 308142944986 in words is "three hundred eight billion, one hundred forty-two million, nine hundred forty-four thousand, nine hundred eighty-six".