161101659 has 16 divisors (see below), whose sum is σ = 218972160. Its totient is φ = 105336000.

The previous prime is 161101657. The next prime is 161101687. The reversal of 161101659 is 956101161.

It is not a de Polignac number, because 161101659 - 2¹ = 161101657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161101657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31534 + ... + 36284.

It is an arithmetic number, because the mean of its divisors is an integer number (13685760).

Almost surely, 2^161101659 is an apocalyptic number.

161101659 is a deficient number, since it is larger than the sum of its proper divisors (57870501).

161101659 is a wasteful number, since it uses less digits than its factorization.

161101659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 161101659 is about 12692.5828340807. The cubic root of 161101659 is about 544.1266589360.

The spelling of 161101659 in words is "one hundred sixty-one million, one hundred one thousand, six hundred fifty-nine".