2491457436 has 36 divisors (see below), whose sum is σ = 6782302072. Its totient is φ = 766602144.

The previous prime is 2491457417. The next prime is 2491457489. The reversal of 2491457436 is 6347541942.

2491457436 is a `hidden beast` number, since 2 + 49 + 1 + 4 + 574 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 2491457391 and 2491457400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2661346 + ... + 2662281.

Almost surely, 2^2491457436 is an apocalyptic number.

2491457436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2491457436 is an abundant number, since it is smaller than the sum of its proper divisors (4290844636).

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

2491457436 is a wasteful number, since it uses less digits than its factorization.

2491457436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323650 (or 5323645 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 2491457436 is about 49914.5012596540. The cubic root of 2491457436 is about 1355.6611717712.

The spelling of 2491457436 in words is "two billion, four hundred ninety-one million, four hundred fifty-seven thousand, four hundred thirty-six".