16885349731 has 16 divisors (see below), whose sum is σ = 18042716160. Its totient is φ = 15767004960.

The previous prime is 16885349729. The next prime is 16885349737. The reversal of 16885349731 is 13794358861.

It is a cyclic number.

It is not a de Polignac number, because 16885349731 - 2¹ = 16885349729 is a prime.

It is a super-2 number, since 2×16885349731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16885349737) 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 15 ways as a sum of consecutive naturals, for example, 1633726 + ... + 1644028.

It is an arithmetic number, because the mean of its divisors is an integer number (1127669760).

Almost surely, 2^16885349731 is an apocalyptic number.

16885349731 is a deficient number, since it is larger than the sum of its proper divisors (1157366429).

16885349731 is a wasteful number, since it uses less digits than its factorization.

16885349731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12186.

The product of its digits is 4354560, while the sum is 55.

The spelling of 16885349731 in words is "sixteen billion, eight hundred eighty-five million, three hundred forty-nine thousand, seven hundred thirty-one".