16864883731 has 4 divisors (see below), whose sum is σ = 16868087352. Its totient is φ = 16861680112.

The previous prime is 16864883729. The next prime is 16864883743. The reversal of 16864883731 is 13738846861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16864883731 - 2¹ = 16864883729 is a prime.

It is a super-2 number, since 2×16864883731² (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 (16864883131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593901 + ... + 1604446.

It is an arithmetic number, because the mean of its divisors is an integer number (4217021838).

Almost surely, 2^16864883731 is an apocalyptic number.

16864883731 is a deficient number, since it is larger than the sum of its proper divisors (3203621).

16864883731 is an equidigital number, since it uses as much as digits as its factorization.

16864883731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203620.

The product of its digits is 4644864, while the sum is 55.

The spelling of 16864883731 in words is "sixteen billion, eight hundred sixty-four million, eight hundred eighty-three thousand, seven hundred thirty-one".