4645445431 has 6 divisors (see below), whose sum is σ = 5106150896. Its totient is φ = 4223132100.

The previous prime is 4645445393. The next prime is 4645445443. The reversal of 4645445431 is 1345445464.

It is a happy number.

It is not a de Polignac number, because 4645445431 - 2¹⁵ = 4645412663 is a prime.

It is a super-2 number, since 2×4645445431² = 43160326504797551522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4645445461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19195935 + ... + 19196176.

Almost surely, 2^4645445431 is an apocalyptic number.

4645445431 is a deficient number, since it is larger than the sum of its proper divisors (460705465).

4645445431 is a wasteful number, since it uses less digits than its factorization.

4645445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38392133 (or 38392122 counting only the distinct ones).

The product of its digits is 460800, while the sum is 40.

The square root of 4645445431 is about 68157.5045831345. The cubic root of 4645445431 is about 1668.5624057176.

The spelling of 4645445431 in words is "four billion, six hundred forty-five million, four hundred forty-five thousand, four hundred thirty-one".