2501961894 has 24 divisors (see below), whose sum is σ = 5425205760. Its totient is φ = 833327568.

The previous prime is 2501961871. The next prime is 2501961947. The reversal of 2501961894 is 4981691052.

2501961894 is a `hidden beast` number, since 2 + 501 + 9 + 61 + 89 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31317 + ... + 77360.

It is an arithmetic number, because the mean of its divisors is an integer number (226050240).

Almost surely, 2^2501961894 is an apocalyptic number.

2501961894 is an abundant number, since it is smaller than the sum of its proper divisors (2923243866).

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

2501961894 is a wasteful number, since it uses less digits than its factorization.

2501961894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109964 (or 109961 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 2501961894 is about 50019.6150924815. The cubic root of 2501961894 is about 1357.5637421103.

The spelling of 2501961894 in words is "two billion, five hundred one million, nine hundred sixty-one thousand, eight hundred ninety-four".