161601110 has 32 divisors (see below), whose sum is σ = 318269952. Its totient is φ = 58589280.

The previous prime is 161601107. The next prime is 161601161. The reversal of 161601110 is 11106161.

161601110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161601110² = 52229837506464200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38369 + ... + 42371.

It is an arithmetic number, because the mean of its divisors is an integer number (9945936).

Almost surely, 2^161601110 is an apocalyptic number.

161601110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161601110 is a deficient number, since it is larger than the sum of its proper divisors (156668842).

161601110 is a wasteful number, since it uses less digits than its factorization.

161601110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 161601110 is about 12712.2425244329. The cubic root of 161601110 is about 544.6883834287.

Adding to 161601110 its reverse (11106161), we get a palindrome (172707271).

The spelling of 161601110 in words is "one hundred sixty-one million, six hundred one thousand, one hundred ten".