381009460 has 24 divisors (see below), whose sum is σ = 861668136. Its totient is φ = 140680320.

The previous prime is 381009443. The next prime is 381009479. The reversal of 381009460 is 64900183.

It can be written as a sum of positive squares in 4 ways, for example, as 11370384 + 369639076 = 3372^2 + 19226^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732451 + ... + 732970.

It is an arithmetic number, because the mean of its divisors is an integer number (35902839).

Almost surely, 2^381009460 is an apocalyptic number.

It is an amenable number.

381009460 is an abundant number, since it is smaller than the sum of its proper divisors (480658676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381009460 is a wasteful number, since it uses less digits than its factorization.

381009460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465443 (or 1465441 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 381009460 is about 19519.4636196797. The cubic root of 381009460 is about 724.9564523982.

The spelling of 381009460 in words is "three hundred eighty-one million, nine thousand, four hundred sixty".