16031495869 has 2 divisors, whose sum is σ = 16031495870. Its totient is φ = 16031495868.

The previous prime is 16031495867. The next prime is 16031495881. The reversal of 16031495869 is 96859413061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15999720100 + 31775769 = 126490^2 + 5637^2 .

It is a cyclic number.

It is not a de Polignac number, because 16031495869 - 2¹ = 16031495867 is a prime.

It is a super-2 number, since 2×16031495869² (a number of 21 digits) contains 22 as substring.

Together with 16031495867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16031495867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8015747934 + 8015747935.

It is an arithmetic number, because the mean of its divisors is an integer number (8015747935).

Almost surely, 2^16031495869 is an apocalyptic number.

It is an amenable number.

16031495869 is a deficient number, since it is larger than the sum of its proper divisors (1).

16031495869 is an equidigital number, since it uses as much as digits as its factorization.

16031495869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 16031495869 in words is "sixteen billion, thirty-one million, four hundred ninety-five thousand, eight hundred sixty-nine".