468657491 has 4 divisors (see below), whose sum is σ = 468911184. Its totient is φ = 468403800.

The previous prime is 468657481. The next prime is 468657509. The reversal of 468657491 is 194756864.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-468657491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (468657421) 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, 124055 + ... + 127776.

It is an arithmetic number, because the mean of its divisors is an integer number (117227796).

Almost surely, 2^468657491 is an apocalyptic number.

468657491 is a deficient number, since it is larger than the sum of its proper divisors (253693).

468657491 is a wasteful number, since it uses less digits than its factorization.

468657491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253692.

The product of its digits is 1451520, while the sum is 50.

The square root of 468657491 is about 21648.4985853523. The cubic root of 468657491 is about 776.7570214425.

The spelling of 468657491 in words is "four hundred sixty-eight million, six hundred fifty-seven thousand, four hundred ninety-one".