381765801 has 16 divisors (see below), whose sum is σ = 523067328. Its totient is φ = 247526400.

The previous prime is 381765781. The next prime is 381765817. The reversal of 381765801 is 108567183.

It is not a de Polignac number, because 381765801 - 2⁶ = 381765737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381765801.

It is not an unprimeable number, because it can be changed into a prime (381765871) 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, 36025 + ... + 45401.

It is an arithmetic number, because the mean of its divisors is an integer number (32691708).

Almost surely, 2^381765801 is an apocalyptic number.

It is an amenable number.

381765801 is a deficient number, since it is larger than the sum of its proper divisors (141301527).

381765801 is a wasteful number, since it uses less digits than its factorization.

381765801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 381765801 is about 19538.8280354785. The cubic root of 381765801 is about 725.4358384556.

The spelling of 381765801 in words is "three hundred eighty-one million, seven hundred sixty-five thousand, eight hundred one".