4457133891 has 16 divisors (see below), whose sum is σ = 7546470400. Its totient is φ = 2546933544.

The previous prime is 4457133883. The next prime is 4457133949. The reversal of 4457133891 is 1983317544.

4457133891 is a `hidden beast` number, since 44 + 571 + 3 + 38 + 9 + 1 = 666.

It is not a de Polignac number, because 4457133891 - 2³ = 4457133883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4457133091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11791171 + ... + 11791548.

It is an arithmetic number, because the mean of its divisors is an integer number (471654400).

Almost surely, 2^4457133891 is an apocalyptic number.

4457133891 is a deficient number, since it is larger than the sum of its proper divisors (3089336509).

4457133891 is a wasteful number, since it uses less digits than its factorization.

4457133891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23582735 (or 23582729 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4457133891 is about 66761.7696814577. The cubic root of 4457133891 is about 1645.7046393807.

The spelling of 4457133891 in words is "four billion, four hundred fifty-seven million, one hundred thirty-three thousand, eight hundred ninety-one".