161146157 has 4 divisors (see below), whose sum is σ = 161179776. Its totient is φ = 161112540.

The previous prime is 161146147. The next prime is 161146199. The reversal of 161146157 is 751641161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161146157 - 2²⁴ = 144368941 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 (161146147) 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, 8123 + ... + 19704.

It is an arithmetic number, because the mean of its divisors is an integer number (40294944).

Almost surely, 2^161146157 is an apocalyptic number.

It is an amenable number.

161146157 is a deficient number, since it is larger than the sum of its proper divisors (33619).

161146157 is an equidigital number, since it uses as much as digits as its factorization.

161146157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33618.

The product of its digits is 5040, while the sum is 32.

The square root of 161146157 is about 12694.3356265698. The cubic root of 161146157 is about 544.1767521904.

The spelling of 161146157 in words is "one hundred sixty-one million, one hundred forty-six thousand, one hundred fifty-seven".