157109161 has 8 divisors (see below), whose sum is σ = 171529344. Its totient is φ = 142711920.

The previous prime is 157109131. The next prime is 157109167. The reversal of 157109161 is 161901751.

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 157109161 - 2⁵ = 157109129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157109167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10635 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (21441168).

Almost surely, 2^157109161 is an apocalyptic number.

157109161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157109161 is a deficient number, since it is larger than the sum of its proper divisors (14420183).

157109161 is a wasteful number, since it uses less digits than its factorization.

157109161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 157109161 is about 12534.3193273508. The cubic root of 157109161 is about 539.5940719332.

The spelling of 157109161 in words is "one hundred fifty-seven million, one hundred nine thousand, one hundred sixty-one".