3945662456 has 48 divisors (see below), whose sum is σ = 7626897000. Its totient is φ = 1913550912.

The previous prime is 3945662449. The next prime is 3945662459. The reversal of 3945662456 is 6542665493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945662459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2321495 + ... + 2323193.

Almost surely, 2^3945662456 is an apocalyptic number.

It is an amenable number.

3945662456 is a deficient number, since it is larger than the sum of its proper divisors (3681234544).

3945662456 is a wasteful number, since it uses less digits than its factorization.

3945662456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 1901 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 50.

The square root of 3945662456 is about 62814.5083241125. The cubic root of 3945662456 is about 1580.1802998860.

The spelling of 3945662456 in words is "three billion, nine hundred forty-five million, six hundred sixty-two thousand, four hundred fifty-six".