2495489391 has 20 divisors (see below), whose sum is σ = 3814528872. Its totient is φ = 1624967568.

The previous prime is 2495489389. The next prime is 2495489407. The reversal of 2495489391 is 1939845942.

2495489391 is a `hidden beast` number, since 2 + 4 + 9 + 548 + 9 + 3 + 91 = 666.

It is not a de Polignac number, because 2495489391 - 2¹ = 2495489389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2495489341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 354756 + ... + 361721.

Almost surely, 2^2495489391 is an apocalyptic number.

2495489391 is a deficient number, since it is larger than the sum of its proper divisors (1319039481).

2495489391 is an equidigital number, since it uses as much as digits as its factorization.

2495489391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716532 (or 716523 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 2495489391 is about 49954.8735460315. The cubic root of 2495489391 is about 1356.3920718011.

The spelling of 2495489391 in words is "two billion, four hundred ninety-five million, four hundred eighty-nine thousand, three hundred ninety-one".