381246618 has 32 divisors (see below), whose sum is σ = 806303232. Its totient is φ = 119980800.

The previous prime is 381246617. The next prime is 381246623. The reversal of 381246618 is 816642183.

It is not an unprimeable number, because it can be changed into a prime (381246611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17371 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (25196976).

Almost surely, 2^381246618 is an apocalyptic number.

381246618 is an abundant number, since it is smaller than the sum of its proper divisors (425056614).

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

381246618 is a wasteful number, since it uses less digits than its factorization.

381246618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50070.

The product of its digits is 55296, while the sum is 39.

The square root of 381246618 is about 19525.5375854290. The cubic root of 381246618 is about 725.1068367329.

The spelling of 381246618 in words is "three hundred eighty-one million, two hundred forty-six thousand, six hundred eighteen".