161135147 has 4 divisors (see below), whose sum is σ = 164882520. Its totient is φ = 157387776.

The previous prime is 161135101. The next prime is 161135173. The reversal of 161135147 is 741531161.

It is a happy number.

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 161135147 - 2⁶ = 161135083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161135047) 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, 1873622 + ... + 1873707.

It is an arithmetic number, because the mean of its divisors is an integer number (41220630).

Almost surely, 2^161135147 is an apocalyptic number.

161135147 is a deficient number, since it is larger than the sum of its proper divisors (3747373).

161135147 is an equidigital number, since it uses as much as digits as its factorization.

161135147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747372.

The product of its digits is 2520, while the sum is 29.

The square root of 161135147 is about 12693.9019611781. The cubic root of 161135147 is about 544.1643586328.

The spelling of 161135147 in words is "one hundred sixty-one million, one hundred thirty-five thousand, one hundred forty-seven".