4640944051 has 4 divisors (see below), whose sum is σ = 4643206672. Its totient is φ = 4638681432.

The previous prime is 4640944043. The next prime is 4640944103. The reversal of 4640944051 is 1504490464.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4640944051 - 2³ = 4640944043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4640944051.

It is not an unprimeable number, because it can be changed into a prime (4640944031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128231 + ... + 1132336.

It is an arithmetic number, because the mean of its divisors is an integer number (1160801668).

Almost surely, 2^4640944051 is an apocalyptic number.

4640944051 is a deficient number, since it is larger than the sum of its proper divisors (2262621).

4640944051 is a wasteful number, since it uses less digits than its factorization.

4640944051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262620.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 4640944051 is about 68124.4746842132. The cubic root of 4640944051 is about 1668.0232926710.

The spelling of 4640944051 in words is "four billion, six hundred forty million, nine hundred forty-four thousand, fifty-one".