161954675 has 6 divisors (see below), whose sum is σ = 200823828. Its totient is φ = 129563720.

The previous prime is 161954657. The next prime is 161954711. The reversal of 161954675 is 576459161.

It is a de Polignac number, because none of the positive numbers 2^k-161954675 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3239069 + ... + 3239118.

It is an arithmetic number, because the mean of its divisors is an integer number (33470638).

Almost surely, 2^161954675 is an apocalyptic number.

161954675 is a deficient number, since it is larger than the sum of its proper divisors (38869153).

161954675 is an equidigital number, since it uses as much as digits as its factorization.

161954675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478197 (or 6478192 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 161954675 is about 12726.1414026405. The cubic root of 161954675 is about 545.0853329897.

The spelling of 161954675 in words is "one hundred sixty-one million, nine hundred fifty-four thousand, six hundred seventy-five".