2500803691 has 4 divisors (see below), whose sum is σ = 2501920872. Its totient is φ = 2499686512.

The previous prime is 2500803689. The next prime is 2500803709. The reversal of 2500803691 is 1963080052.

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

It is a cyclic number.

It is not a de Polignac number, because 2500803691 - 2¹ = 2500803689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500803631) 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 3 ways as a sum of consecutive naturals, for example, 555226 + ... + 559711.

It is an arithmetic number, because the mean of its divisors is an integer number (625480218).

Almost surely, 2^2500803691 is an apocalyptic number.

2500803691 is a deficient number, since it is larger than the sum of its proper divisors (1117181).

2500803691 is a wasteful number, since it uses less digits than its factorization.

2500803691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117180.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2500803691 is about 50008.0362641846. The cubic root of 2500803691 is about 1357.3542295826.

The spelling of 2500803691 in words is "two billion, five hundred million, eight hundred three thousand, six hundred ninety-one".