361994861 has 8 divisors (see below), whose sum is σ = 378297024. Its totient is φ = 345739680.

The previous prime is 361994837. The next prime is 361994869. The reversal of 361994861 is 168499163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 361994861 - 2⁶ = 361994797 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 (361994869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4505 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (47287128).

Almost surely, 2^361994861 is an apocalyptic number.

It is an amenable number.

361994861 is a deficient number, since it is larger than the sum of its proper divisors (16302163).

361994861 is a wasteful number, since it uses less digits than its factorization.

361994861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23491.

The product of its digits is 279936, while the sum is 47.

The square root of 361994861 is about 19026.1625400394. The cubic root of 361994861 is about 712.6902242066.

The spelling of 361994861 in words is "three hundred sixty-one million, nine hundred ninety-four thousand, eight hundred sixty-one".