4645678431 has 4 divisors (see below), whose sum is σ = 6194237912. Its totient is φ = 3097118952.

The previous prime is 4645678423. The next prime is 4645678441. The reversal of 4645678431 is 1348765464.

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

It is not a de Polignac number, because 4645678431 - 2³ = 4645678423 is a prime.

It is a super-2 number, since 2×4645678431² = 43164656168517243522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4645678441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774279736 + ... + 774279741.

It is an arithmetic number, because the mean of its divisors is an integer number (1548559478).

Almost surely, 2^4645678431 is an apocalyptic number.

4645678431 is a deficient number, since it is larger than the sum of its proper divisors (1548559481).

4645678431 is a wasteful number, since it uses less digits than its factorization.

4645678431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548559480.

The product of its digits is 1935360, while the sum is 48.

The square root of 4645678431 is about 68159.2138378958. The cubic root of 4645678431 is about 1668.5903017538.

The spelling of 4645678431 in words is "four billion, six hundred forty-five million, six hundred seventy-eight thousand, four hundred thirty-one".