161441650 has 24 divisors (see below), whose sum is σ = 302284224. Its totient is φ = 64146000.

The previous prime is 161441647. The next prime is 161441677. The reversal of 161441650 is 56144161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3142 + ... + 18241.

It is an arithmetic number, because the mean of its divisors is an integer number (12595176).

Almost surely, 2^161441650 is an apocalyptic number.

161441650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161441650 is a deficient number, since it is larger than the sum of its proper divisors (140842574).

161441650 is a wasteful number, since it uses less digits than its factorization.

161441650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21546 (or 21541 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 161441650 is about 12705.9690696932. The cubic root of 161441650 is about 544.5091672635.

It can be divided in two parts, 1614 and 41650, that added together give a square (43264 = 208²).

The spelling of 161441650 in words is "one hundred sixty-one million, four hundred forty-one thousand, six hundred fifty".