381567850 has 12 divisors (see below), whose sum is σ = 709716294. Its totient is φ = 152627120.

The previous prime is 381567821. The next prime is 381567859. The reversal of 381567850 is 58765183.

It can be written as a sum of positive squares in 3 ways, for example, as 148425489 + 233142361 = 12183^2 + 15269^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381567797 and 381567806.

It is not an unprimeable number, because it can be changed into a prime (381567859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3815629 + ... + 3815728.

Almost surely, 2^381567850 is an apocalyptic number.

381567850 is a deficient number, since it is larger than the sum of its proper divisors (328148444).

381567850 is a wasteful number, since it uses less digits than its factorization.

381567850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631369 (or 7631364 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 381567850 is about 19533.7617984862. The cubic root of 381567850 is about 725.3104338436.

The spelling of 381567850 in words is "three hundred eighty-one million, five hundred sixty-seven thousand, eight hundred fifty".