461623191 has 4 divisors (see below), whose sum is σ = 615497592. Its totient is φ = 307748792.

The previous prime is 461623181. The next prime is 461623199. The reversal of 461623191 is 191326164.

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

It is a cyclic number.

It is not a de Polignac number, because 461623191 - 2⁵ = 461623159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461623199) 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, 76937196 + ... + 76937201.

It is an arithmetic number, because the mean of its divisors is an integer number (153874398).

Almost surely, 2^461623191 is an apocalyptic number.

461623191 is a deficient number, since it is larger than the sum of its proper divisors (153874401).

461623191 is a wasteful number, since it uses less digits than its factorization.

461623191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153874400.

The product of its digits is 7776, while the sum is 33.

The square root of 461623191 is about 21485.4181015869. The cubic root of 461623191 is about 772.8511774557.

The spelling of 461623191 in words is "four hundred sixty-one million, six hundred twenty-three thousand, one hundred ninety-one".