16869731 has 2 divisors, whose sum is σ = 16869732. Its totient is φ = 16869730.

The previous prime is 16869719. The next prime is 16869779. The reversal of 16869731 is 13796861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16869731 is a prime.

It is a super-2 number, since 2×16869731² = 569175648024722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16863731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8434865 + 8434866.

It is an arithmetic number, because the mean of its divisors is an integer number (8434866).

Almost surely, 2^16869731 is an apocalyptic number.

16869731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16869731 is an equidigital number, since it uses as much as digits as its factorization.

16869731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 16869731 is about 4107.2778089630. The cubic root of 16869731 is about 256.4696933314.

The spelling of 16869731 in words is "sixteen million, eight hundred sixty-nine thousand, seven hundred thirty-one".