161407159 has 4 divisors (see below), whose sum is σ = 164053240. Its totient is φ = 158761080.

The previous prime is 161407153. The next prime is 161407199. The reversal of 161407159 is 951704161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161407159 - 2³ = 161407151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161407151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322949 + ... + 1323070.

It is an arithmetic number, because the mean of its divisors is an integer number (41013310).

Almost surely, 2^161407159 is an apocalyptic number.

161407159 is a deficient number, since it is larger than the sum of its proper divisors (2646081).

161407159 is an equidigital number, since it uses as much as digits as its factorization.

161407159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646080.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 161407159 is about 12704.6117217332. The cubic root of 161407159 is about 544.4703875077.

The spelling of 161407159 in words is "one hundred sixty-one million, four hundred seven thousand, one hundred fifty-nine".