16142493391 has 24 divisors (see below), whose sum is σ = 16937365680. Its totient is φ = 15379054080.

The previous prime is 16142493371. The next prime is 16142493407. The reversal of 16142493391 is 19339424161.

It is not a de Polignac number, because 16142493391 - 2⁵ = 16142493359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16142493371) 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 23 ways as a sum of consecutive naturals, for example, 36438816 + ... + 36439258.

It is an arithmetic number, because the mean of its divisors is an integer number (705723570).

Almost surely, 2^16142493391 is an apocalyptic number.

16142493391 is a deficient number, since it is larger than the sum of its proper divisors (794872289).

16142493391 is an equidigital number, since it uses as much as digits as its factorization.

16142493391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 946 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The spelling of 16142493391 in words is "sixteen billion, one hundred forty-two million, four hundred ninety-three thousand, three hundred ninety-one".