16949950391 has 8 divisors (see below), whose sum is σ = 18673933968. Its totient is φ = 15256480000.

The previous prime is 16949950387. The next prime is 16949950397. The reversal of 16949950391 is 19305994961.

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

It is a cyclic number.

It is not a de Polignac number, because 16949950391 - 2² = 16949950387 is a prime.

It is a super-2 number, since 2×16949950391² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16949950397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7627130 + ... + 7629351.

It is an arithmetic number, because the mean of its divisors is an integer number (2334241746).

Almost surely, 2^16949950391 is an apocalyptic number.

16949950391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16949950391 is a deficient number, since it is larger than the sum of its proper divisors (1723983577).

16949950391 is a wasteful number, since it uses less digits than its factorization.

16949950391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15256593.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The spelling of 16949950391 in words is "sixteen billion, nine hundred forty-nine million, nine hundred fifty thousand, three hundred ninety-one".