4901491809 has 48 divisors (see below), whose sum is σ = 7408128000. Its totient is φ = 3119407200.

The previous prime is 4901491759. The next prime is 4901491817. The reversal of 4901491809 is 9081941094.

4901491809 is a `hidden beast` number, since 490 + 149 + 18 + 0 + 9 = 666.

It is not a de Polignac number, because 4901491809 - 2⁹ = 4901491297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4901491409) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 8182492 + ... + 8183090.

It is an arithmetic number, because the mean of its divisors is an integer number (154336000).

Almost surely, 2^4901491809 is an apocalyptic number.

It is an amenable number.

4901491809 is a deficient number, since it is larger than the sum of its proper divisors (2506636191).

4901491809 is a wasteful number, since it uses less digits than its factorization.

4901491809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 4901491809 is about 70010.6549676547. The cubic root of 4901491809 is about 1698.6716045800.

The spelling of 4901491809 in words is "four billion, nine hundred one million, four hundred ninety-one thousand, eight hundred nine".