451818768 has 20 divisors (see below), whose sum is σ = 1167198608. Its totient is φ = 150606240.

The previous prime is 451818767. The next prime is 451818779. The reversal of 451818768 is 867818154.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 9412891 = 451818768 / (4 + 5 + 1 + 8 + 1 + 8 + 7 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (451818767) 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, 4706398 + ... + 4706493.

Almost surely, 2^451818768 is an apocalyptic number.

451818768 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

451818768 is an abundant number, since it is smaller than the sum of its proper divisors (715379840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451818768 is a wasteful number, since it uses less digits than its factorization.

451818768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412902 (or 9412896 counting only the distinct ones).

The product of its digits is 430080, while the sum is 48.

The square root of 451818768 is about 21256.0289800329. The cubic root of 451818768 is about 767.3404439371.

The spelling of 451818768 in words is "four hundred fifty-one million, eight hundred eighteen thousand, seven hundred sixty-eight".