361920657 has 16 divisors (see below), whose sum is σ = 556561280. Its totient is φ = 204913152.

The previous prime is 361920619. The next prime is 361920661. The reversal of 361920657 is 756029163.

It is not a de Polignac number, because 361920657 - 2⁶ = 361920593 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361920457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76768 + ... + 81345.

It is an arithmetic number, because the mean of its divisors is an integer number (34785080).

Almost surely, 2^361920657 is an apocalyptic number.

It is an amenable number.

361920657 is a deficient number, since it is larger than the sum of its proper divisors (194640623).

361920657 is a wasteful number, since it uses less digits than its factorization.

361920657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158232.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 361920657 is about 19024.2123884275. The cubic root of 361920657 is about 712.6415236263.

The spelling of 361920657 in words is "three hundred sixty-one million, nine hundred twenty thousand, six hundred fifty-seven".