361880641 has 2 divisors, whose sum is σ = 361880642. Its totient is φ = 361880640.

The previous prime is 361880627. The next prime is 361880657. The reversal of 361880641 is 146088163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295702416 + 66178225 = 17196^2 + 8135^2 .

It is a cyclic number.

It is not a de Polignac number, because 361880641 - 2¹³ = 361872449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 361880641.

It is not a weakly prime, because it can be changed into another prime (361880611) 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 as a sum of consecutive naturals, namely, 180940320 + 180940321.

It is an arithmetic number, because the mean of its divisors is an integer number (180940321).

Almost surely, 2^361880641 is an apocalyptic number.

It is an amenable number.

361880641 is a deficient number, since it is larger than the sum of its proper divisors (1).

361880641 is an equidigital number, since it uses as much as digits as its factorization.

361880641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 361880641 is about 19023.1606469587. The cubic root of 361880641 is about 712.6152580957.

The spelling of 361880641 in words is "three hundred sixty-one million, eight hundred eighty thousand, six hundred forty-one".