2497131878 has 16 divisors (see below), whose sum is σ = 3834625536. Its totient is φ = 1219262400.

The previous prime is 2497131877. The next prime is 2497131881. The reversal of 2497131878 is 8781317942.

It is a happy number.

It is a super-2 number, since 2×2497131878² = 12471335232247613768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497131877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69926 + ... + 99417.

It is an arithmetic number, because the mean of its divisors is an integer number (239664096).

Almost surely, 2^2497131878 is an apocalyptic number.

2497131878 is a deficient number, since it is larger than the sum of its proper divisors (1337493658).

2497131878 is a wasteful number, since it uses less digits than its factorization.

2497131878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169519.

The product of its digits is 677376, while the sum is 50.

The square root of 2497131878 is about 49971.3105491541. The cubic root of 2497131878 is about 1356.6895909641.

The spelling of 2497131878 in words is "two billion, four hundred ninety-seven million, one hundred thirty-one thousand, eight hundred seventy-eight".