461888581 has 24 divisors (see below), whose sum is σ = 581837760. Its totient is φ = 358913280.

The previous prime is 461888573. The next prime is 461888591. The reversal of 461888581 is 185888164.

It is not a de Polignac number, because 461888581 - 2³ = 461888573 is a prime.

It is a super-2 number, since 2×461888581² = 426682122516387122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461888591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496725 + ... + 497653.

It is an arithmetic number, because the mean of its divisors is an integer number (24243240).

Almost surely, 2^461888581 is an apocalyptic number.

It is an amenable number.

461888581 is a deficient number, since it is larger than the sum of its proper divisors (119949179).

461888581 is a wasteful number, since it uses less digits than its factorization.

461888581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1534 counting only the distinct ones).

The product of its digits is 491520, while the sum is 49.

The square root of 461888581 is about 21491.5932634135. The cubic root of 461888581 is about 772.9992547077. Note that the first 3 decimals are identical.

The spelling of 461888581 in words is "four hundred sixty-one million, eight hundred eighty-eight thousand, five hundred eighty-one".