381045017 has 4 divisors (see below), whose sum is σ = 381603600. Its totient is φ = 380486436.

The previous prime is 381044999. The next prime is 381045029. The reversal of 381045017 is 710540183.

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 381045017 - 2⁸ = 381044761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381045517) 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, 278267 + ... + 279632.

It is an arithmetic number, because the mean of its divisors is an integer number (95400900).

Almost surely, 2^381045017 is an apocalyptic number.

It is an amenable number.

381045017 is a deficient number, since it is larger than the sum of its proper divisors (558583).

381045017 is an equidigital number, since it uses as much as digits as its factorization.

381045017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558582.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 381045017 is about 19520.3744072700. The cubic root of 381045017 is about 724.9790034347.

The spelling of 381045017 in words is "three hundred eighty-one million, forty-five thousand, seventeen".