382791861 has 6 divisors (see below), whose sum is σ = 552921590. Its totient is φ = 255194568.

The previous prime is 382791833. The next prime is 382791869. The reversal of 382791861 is 168197283.

It can be written as a sum of positive squares in only one way, i.e., 290054961 + 92736900 = 17031^2 + 9630^2 .

It is not a de Polignac number, because 382791861 - 2⁹ = 382791349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382791869) 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, 21266206 + ... + 21266223.

Almost surely, 2^382791861 is an apocalyptic number.

It is an amenable number.

382791861 is a deficient number, since it is larger than the sum of its proper divisors (170129729).

382791861 is a wasteful number, since it uses less digits than its factorization.

382791861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42532435 (or 42532432 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 382791861 is about 19565.0673650770. The cubic root of 382791861 is about 726.0851674782.

The spelling of 382791861 in words is "three hundred eighty-two million, seven hundred ninety-one thousand, eight hundred sixty-one".