2497778964 has 48 divisors (see below), whose sum is σ = 6488251840. Its totient is φ = 830982240.

The previous prime is 2497778963. The next prime is 2497778981. The reversal of 2497778964 is 4698777942.

2497778964 is a `hidden beast` number, since 2 + 497 + 7 + 7 + 89 + 64 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497778963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34374 + ... + 78594.

Almost surely, 2^2497778964 is an apocalyptic number.

It is an amenable number.

2497778964 is an abundant number, since it is smaller than the sum of its proper divisors (3990472876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2497778964 is a wasteful number, since it uses less digits than its factorization.

2497778964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44757 (or 44749 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The square root of 2497778964 is about 49977.7847048066. The cubic root of 2497778964 is about 1356.8067679314.

The spelling of 2497778964 in words is "two billion, four hundred ninety-seven million, seven hundred seventy-eight thousand, nine hundred sixty-four".