381056530 has 16 divisors (see below), whose sum is σ = 726249240. Its totient is φ = 143456512.

The previous prime is 381056527. The next prime is 381056531. The reversal of 381056530 is 35650183.

It can be written as a sum of positive squares in 4 ways, for example, as 280596001 + 100460529 = 16751^2 + 10023^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381056492 and 381056501.

It is not an unprimeable number, because it can be changed into a prime (381056531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120585 + ... + 1120924.

Almost surely, 2^381056530 is an apocalyptic number.

381056530 is a deficient number, since it is larger than the sum of its proper divisors (345192710).

381056530 is a wasteful number, since it uses less digits than its factorization.

381056530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241533.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 381056530 is about 19520.6693020501. The cubic root of 381056530 is about 724.9863049335.

The spelling of 381056530 in words is "three hundred eighty-one million, fifty-six thousand, five hundred thirty".