381067144 has 32 divisors (see below), whose sum is σ = 739246680. Its totient is φ = 184011264.

The previous prime is 381067139. The next prime is 381067157. The reversal of 381067144 is 441760183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 300606244 + 80460900 = 17338^2 + 8970^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35854 + ... + 45250.

Almost surely, 2^381067144 is an apocalyptic number.

It is an amenable number.

381067144 is a deficient number, since it is larger than the sum of its proper divisors (358179536).

381067144 is a wasteful number, since it uses less digits than its factorization.

381067144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577 (or 9573 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 381067144 is about 19520.9411658352. The cubic root of 381067144 is about 724.9930361598.

The spelling of 381067144 in words is "three hundred eighty-one million, sixty-seven thousand, one hundred forty-four".