4991454906 has 16 divisors (see below), whose sum is σ = 10085827584. Its totient is φ = 1646665344.

The previous prime is 4991454859. The next prime is 4991455013. The reversal of 4991454906 is 6094541994.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4287610 + ... + 4288773.

It is an arithmetic number, because the mean of its divisors is an integer number (630364224).

Almost surely, 2^4991454906 is an apocalyptic number.

4991454906 is an abundant number, since it is smaller than the sum of its proper divisors (5094372678).

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

4991454906 is a wasteful number, since it uses less digits than its factorization.

4991454906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8576485.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 4991454906 is about 70650.2293414537. The cubic root of 4991454906 is about 1709.0012642019.

The spelling of 4991454906 in words is "four billion, nine hundred ninety-one million, four hundred fifty-four thousand, nine hundred six".