161648995 has 8 divisors (see below), whose sum is σ = 194241600. Its totient is φ = 129144000.

The previous prime is 161648983. The next prime is 161649011. The reversal of 161648995 is 599846161.

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

It is not a de Polignac number, because 161648995 - 2⁷ = 161648867 is a prime.

It is a super-2 number, since 2×161648995² = 52260795169020050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17770 + ... + 25279.

It is an arithmetic number, because the mean of its divisors is an integer number (24280200).

Almost surely, 2^161648995 is an apocalyptic number.

161648995 is a deficient number, since it is larger than the sum of its proper divisors (32592605).

161648995 is an equidigital number, since it uses as much as digits as its factorization.

161648995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43805.

The product of its digits is 466560, while the sum is 49.

The square root of 161648995 is about 12714.1258055755. The cubic root of 161648995 is about 544.7421780829.

The spelling of 161648995 in words is "one hundred sixty-one million, six hundred forty-eight thousand, nine hundred ninety-five".