461157691 has 8 divisors (see below), whose sum is σ = 493320240. Its totient is φ = 429554688.

The previous prime is 461157689. The next prime is 461157707. The reversal of 461157691 is 196751164.

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

It is a cyclic number.

It is not a de Polignac number, because 461157691 - 2¹ = 461157689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461127691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138181 + ... + 141478.

It is an arithmetic number, because the mean of its divisors is an integer number (61665030).

Almost surely, 2^461157691 is an apocalyptic number.

461157691 is a deficient number, since it is larger than the sum of its proper divisors (32162549).

461157691 is a wasteful number, since it uses less digits than its factorization.

461157691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279773.

The product of its digits is 45360, while the sum is 40.

The square root of 461157691 is about 21474.5824406436. The cubic root of 461157691 is about 772.5913095044.

The spelling of 461157691 in words is "four hundred sixty-one million, one hundred fifty-seven thousand, six hundred ninety-one".