19950331161 has 8 divisors (see below), whose sum is σ = 26769871744. Its totient is φ = 13215505680.

The previous prime is 19950331133. The next prime is 19950331183. The reversal of 19950331161 is 16113305991.

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

It is not a de Polignac number, because 19950331161 - 2⁵ = 19950331129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19950331061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21178225 + ... + 21179166.

It is an arithmetic number, because the mean of its divisors is an integer number (3346233968).

Almost surely, 2^19950331161 is an apocalyptic number.

It is an amenable number.

19950331161 is a deficient number, since it is larger than the sum of its proper divisors (6819540583).

19950331161 is a wasteful number, since it uses less digits than its factorization.

19950331161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42357551.

The product of its (nonzero) digits is 21870, while the sum is 39.

The spelling of 19950331161 in words is "nineteen billion, nine hundred fifty million, three hundred thirty-one thousand, one hundred sixty-one".