2978782497 has 24 divisors (see below), whose sum is σ = 4418893440. Its totient is φ = 1932695520.

The previous prime is 2978782481. The next prime is 2978782511. The reversal of 2978782497 is 7942878792.

2978782497 is a `hidden beast` number, since 2 + 9 + 78 + 78 + 2 + 497 = 666.

It is not a de Polignac number, because 2978782497 - 2⁴ = 2978782481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2978782427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56047 + ... + 95387.

It is an arithmetic number, because the mean of its divisors is an integer number (184120560).

Almost surely, 2^2978782497 is an apocalyptic number.

It is an amenable number.

2978782497 is a deficient number, since it is larger than the sum of its proper divisors (1440110943).

2978782497 is a wasteful number, since it uses less digits than its factorization.

2978782497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39573 (or 39570 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 2978782497 is about 54578.2236519292. The cubic root of 2978782497 is about 1438.8414190742.

The spelling of 2978782497 in words is "two billion, nine hundred seventy-eight million, seven hundred eighty-two thousand, four hundred ninety-seven".