464641381 has 4 divisors (see below), whose sum is σ = 464687500. Its totient is φ = 464595264.

The previous prime is 464641379. The next prime is 464641427. The reversal of 464641381 is 183146464.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 202492900 + 262148481 = 14230^2 + 16191^2 .

It is a cyclic number.

It is not a de Polignac number, because 464641381 - 2¹ = 464641379 is a prime.

It is a super-2 number, since 2×464641381² = 431783225875174322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 464641381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464641081) 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, 756 + ... + 30493.

It is an arithmetic number, because the mean of its divisors is an integer number (116171875).

Almost surely, 2^464641381 is an apocalyptic number.

It is an amenable number.

464641381 is a deficient number, since it is larger than the sum of its proper divisors (46119).

464641381 is a wasteful number, since it uses less digits than its factorization.

464641381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46118.

The product of its digits is 55296, while the sum is 37.

The square root of 464641381 is about 21555.5417700414. The cubic root of 464641381 is about 774.5318746300.

The spelling of 464641381 in words is "four hundred sixty-four million, six hundred forty-one thousand, three hundred eighty-one".