2501964394 has 4 divisors (see below), whose sum is σ = 3752946594. Its totient is φ = 1250982196.

The previous prime is 2501964379. The next prime is 2501964397. The reversal of 2501964394 is 4934691052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2501300169 + 664225 = 50013^2 + 815^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2501964394.

It is not an unprimeable number, because it can be changed into a prime (2501964397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625491097 + ... + 625491100.

Almost surely, 2^2501964394 is an apocalyptic number.

2501964394 is a deficient number, since it is larger than the sum of its proper divisors (1250982200).

2501964394 is a wasteful number, since it uses less digits than its factorization.

2501964394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250982199.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2501964394 is about 50019.6400826715. The cubic root of 2501964394 is about 1357.5641942766.

The spelling of 2501964394 in words is "two billion, five hundred one million, nine hundred sixty-four thousand, three hundred ninety-four".