161976023 has 16 divisors (see below), whose sum is σ = 184246272. Its totient is φ = 141060000.

The previous prime is 161976019. The next prime is 161976037. The reversal of 161976023 is 320679161.

It is a cyclic number.

It is not a de Polignac number, because 161976023 - 2² = 161976019 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 (161976043) 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 15 ways as a sum of consecutive naturals, for example, 32090 + ... + 36792.

It is an arithmetic number, because the mean of its divisors is an integer number (11515392).

Almost surely, 2^161976023 is an apocalyptic number.

161976023 is a deficient number, since it is larger than the sum of its proper divisors (22270249).

161976023 is a wasteful number, since it uses less digits than its factorization.

161976023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 161976023 is about 12726.9801209871. The cubic root of 161976023 is about 545.1092820162.

The spelling of 161976023 in words is "one hundred sixty-one million, nine hundred seventy-six thousand, twenty-three".