161914851 has 36 divisors (see below), whose sum is σ = 283967632. Its totient is φ = 87070464.

The previous prime is 161914847. The next prime is 161914897. The reversal of 161914851 is 158419161.

It is a happy number.

It is not a de Polignac number, because 161914851 - 2² = 161914847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161910851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13761 + ... + 22653.

Almost surely, 2^161914851 is an apocalyptic number.

161914851 is a deficient number, since it is larger than the sum of its proper divisors (122052781).

161914851 is a wasteful number, since it uses less digits than its factorization.

161914851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8940 (or 8920 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 161914851 is about 12724.5766530757. The cubic root of 161914851 is about 545.0406512337.

The spelling of 161914851 in words is "one hundred sixty-one million, nine hundred fourteen thousand, eight hundred fifty-one".