2422907978 has 4 divisors (see below), whose sum is σ = 3634361970. Its totient is φ = 1211453988.

The previous prime is 2422907969. The next prime is 2422907989. The reversal of 2422907978 is 8797092242.

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., 2175569449 + 247338529 = 46643^2 + 15727^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605726993 + ... + 605726996.

Almost surely, 2^2422907978 is an apocalyptic number.

2422907978 is a deficient number, since it is larger than the sum of its proper divisors (1211453992).

2422907978 is a wasteful number, since it uses less digits than its factorization.

2422907978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211453991.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 2422907978 is about 49223.0431606986. The cubic root of 2422907978 is about 1343.1122391779.

The spelling of 2422907978 in words is "two billion, four hundred twenty-two million, nine hundred seven thousand, nine hundred seventy-eight".