451869913 has 8 divisors (see below), whose sum is σ = 518893920. Its totient is φ = 389170080.

The previous prime is 451869907. The next prime is 451869917. The reversal of 451869913 is 319968154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451869913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451869917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080820 + ... + 1081237.

It is an arithmetic number, because the mean of its divisors is an integer number (64861740).

Almost surely, 2^451869913 is an apocalyptic number.

It is an amenable number.

451869913 is a deficient number, since it is larger than the sum of its proper divisors (67024007).

451869913 is a wasteful number, since it uses less digits than its factorization.

451869913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162087.

The product of its digits is 233280, while the sum is 46.

The square root of 451869913 is about 21257.2320164221. The cubic root of 451869913 is about 767.3693966566.

The spelling of 451869913 in words is "four hundred fifty-one million, eight hundred sixty-nine thousand, nine hundred thirteen".