16899929849 has 8 divisors (see below), whose sum is σ = 18469998048. Its totient is φ = 15335480160.

The previous prime is 16899929843. The next prime is 16899929863. The reversal of 16899929849 is 94892999861.

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

It is not a de Polignac number, because 16899929849 - 2⁸ = 16899929593 is a prime.

It is a super-2 number, since 2×16899929849² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16899929843) 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, 1398332 + ... + 1410365.

It is an arithmetic number, because the mean of its divisors is an integer number (2308749756).

Almost surely, 2^16899929849 is an apocalyptic number.

It is an amenable number.

16899929849 is a deficient number, since it is larger than the sum of its proper divisors (1570068199).

16899929849 is a wasteful number, since it uses less digits than its factorization.

16899929849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809255.

The product of its digits is 181398528, while the sum is 74.

The spelling of 16899929849 in words is "sixteen billion, eight hundred ninety-nine million, nine hundred twenty-nine thousand, eight hundred forty-nine".