161859363 has 12 divisors (see below), whose sum is σ = 229255320. Its totient is φ = 101558272.

The previous prime is 161859359. The next prime is 161859367. The reversal of 161859363 is 363958161.

It is a happy number.

161859363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161859359) and next prime (161859367).

It is not a de Polignac number, because 161859363 - 2² = 161859359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161859367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92478 + ... + 94211.

It is an arithmetic number, because the mean of its divisors is an integer number (19104610).

Almost surely, 2^161859363 is an apocalyptic number.

161859363 is a deficient number, since it is larger than the sum of its proper divisors (67395957).

161859363 is a wasteful number, since it uses less digits than its factorization.

161859363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186726 (or 186709 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 161859363 is about 12722.3961186563. The cubic root of 161859363 is about 544.9783825558.

The spelling of 161859363 in words is "one hundred sixty-one million, eight hundred fifty-nine thousand, three hundred sixty-three".