161237147 has 8 divisors (see below), whose sum is σ = 164609280. Its totient is φ = 157886440.

The previous prime is 161237113. The next prime is 161237149. The reversal of 161237147 is 741732161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161237147 - 2²⁶ = 94128283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161237149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10322 + ... + 20712.

It is an arithmetic number, because the mean of its divisors is an integer number (20576160).

Almost surely, 2^161237147 is an apocalyptic number.

161237147 is a deficient number, since it is larger than the sum of its proper divisors (3372133).

161237147 is a wasteful number, since it uses less digits than its factorization.

161237147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10713.

The product of its digits is 7056, while the sum is 32.

The square root of 161237147 is about 12697.9190027343. The cubic root of 161237147 is about 544.2791547280.

The spelling of 161237147 in words is "one hundred sixty-one million, two hundred thirty-seven thousand, one hundred forty-seven".