461487381 has 4 divisors (see below), whose sum is σ = 615316512. Its totient is φ = 307658252.

The previous prime is 461487373. The next prime is 461487401. The reversal of 461487381 is 183784164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461487381 - 2³ = 461487373 is a prime.

It is a super-2 number, since 2×461487381² = 425941205644478322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461487581) 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, 76914561 + ... + 76914566.

It is an arithmetic number, because the mean of its divisors is an integer number (153829128).

Almost surely, 2^461487381 is an apocalyptic number.

It is an amenable number.

461487381 is a deficient number, since it is larger than the sum of its proper divisors (153829131).

461487381 is a wasteful number, since it uses less digits than its factorization.

461487381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153829130.

The product of its digits is 129024, while the sum is 42.

The square root of 461487381 is about 21482.2573534533. The cubic root of 461487381 is about 772.7753788279.

The spelling of 461487381 in words is "four hundred sixty-one million, four hundred eighty-seven thousand, three hundred eighty-one".