381765097 has 4 divisors (see below), whose sum is σ = 436302976. Its totient is φ = 327227220.

The previous prime is 381765091. The next prime is 381765101. The reversal of 381765097 is 790567183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381765097 - 2³ = 381765089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381765091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27268929 + ... + 27268942.

It is an arithmetic number, because the mean of its divisors is an integer number (109075744).

Almost surely, 2^381765097 is an apocalyptic number.

It is an amenable number.

381765097 is a deficient number, since it is larger than the sum of its proper divisors (54537879).

381765097 is an equidigital number, since it uses as much as digits as its factorization.

381765097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54537878.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 381765097 is about 19538.8100200601. The cubic root of 381765097 is about 725.4353925390.

The spelling of 381765097 in words is "three hundred eighty-one million, seven hundred sixty-five thousand, ninety-seven".