161920082 has 8 divisors (see below), whose sum is σ = 243015552. Its totient is φ = 80914900.

The previous prime is 161920081. The next prime is 161920097. The reversal of 161920082 is 280029161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161920082² = 52436225909773448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161920081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17894 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (30376944).

Almost surely, 2^161920082 is an apocalyptic number.

161920082 is a deficient number, since it is larger than the sum of its proper divisors (81095470).

161920082 is a wasteful number, since it uses less digits than its factorization.

161920082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45144.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 161920082 is about 12724.7821985290. The cubic root of 161920082 is about 545.0465207322.

The spelling of 161920082 in words is "one hundred sixty-one million, nine hundred twenty thousand, eighty-two".