461011509 has 24 divisors (see below), whose sum is σ = 785587712. Its totient is φ = 254936160.

The previous prime is 461011489. The next prime is 461011511. The reversal of 461011509 is 905110164.

It is not a de Polignac number, because 461011509 - 2⁷ = 461011381 is a prime.

It is a super-2 number, since 2×461011509² = 425063222860914162, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461011589) 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, 116074 + ... + 119979.

Almost surely, 2^461011509 is an apocalyptic number.

It is an amenable number.

461011509 is a deficient number, since it is larger than the sum of its proper divisors (324576203).

461011509 is a wasteful number, since it uses less digits than its factorization.

461011509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236097 (or 236094 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 461011509 is about 21471.1785656959. The cubic root of 461011509 is about 772.5096665143.

The spelling of 461011509 in words is "four hundred sixty-one million, eleven thousand, five hundred nine".