2978148968 has 32 divisors (see below), whose sum is σ = 5779809000. Its totient is φ = 1436924160.

The previous prime is 2978148967. The next prime is 2978149003. The reversal of 2978148968 is 8698418792.

It can be written as a sum of positive squares in 4 ways, for example, as 1843671844 + 1134477124 = 42938^2 + 33682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2978148968.

It is not an unprimeable number, because it can be changed into a prime (2978148967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801098 + ... + 804806.

Almost surely, 2^2978148968 is an apocalyptic number.

It is an amenable number.

2978148968 is a deficient number, since it is larger than the sum of its proper divisors (2801660032).

2978148968 is a wasteful number, since it uses less digits than its factorization.

2978148968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205 (or 7201 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 62.

The square root of 2978148968 is about 54572.4194809063. The cubic root of 2978148968 is about 1438.7394073299.

The spelling of 2978148968 in words is "two billion, nine hundred seventy-eight million, one hundred forty-eight thousand, nine hundred sixty-eight".