2506979903 has 4 divisors (see below), whose sum is σ = 2507103840. Its totient is φ = 2506855968.

The previous prime is 2506979899. The next prime is 2506979927. The reversal of 2506979903 is 3099796052.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2506979903 - 2² = 2506979899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506919903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23783 + ... + 74696.

It is an arithmetic number, because the mean of its divisors is an integer number (626775960).

Almost surely, 2^2506979903 is an apocalyptic number.

2506979903 is a deficient number, since it is larger than the sum of its proper divisors (123937).

2506979903 is an equidigital number, since it uses as much as digits as its factorization.

2506979903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123936.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 2506979903 is about 50069.7503788465. The cubic root of 2506979903 is about 1358.4707260610.

The spelling of 2506979903 in words is "two billion, five hundred six million, nine hundred seventy-nine thousand, nine hundred three".