161620162 has 8 divisors (see below), whose sum is σ = 264469392. Its totient is φ = 73463700.

The previous prime is 161620153. The next prime is 161620163. The reversal of 161620162 is 261026161.

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

It is a super-2 number, since 2×161620162² = 52242153529812488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161620163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3673164 + ... + 3673207.

It is an arithmetic number, because the mean of its divisors is an integer number (33058674).

Almost surely, 2^161620162 is an apocalyptic number.

161620162 is a deficient number, since it is larger than the sum of its proper divisors (102849230).

161620162 is a wasteful number, since it uses less digits than its factorization.

161620162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346384.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 161620162 is about 12712.9918587247. The cubic root of 161620162 is about 544.7097879750.

The spelling of 161620162 in words is "one hundred sixty-one million, six hundred twenty thousand, one hundred sixty-two".