16291487919 has 16 divisors (see below), whose sum is σ = 24832507392. Its totient is φ = 9306653088.

The previous prime is 16291487909. The next prime is 16291487981. The reversal of 16291487919 is 91978419261.

16291487919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16291487919 - 2⁵ = 16291487887 is a prime.

It is a super-2 number, since 2×16291487919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16291487909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41979 + ... + 185324.

It is an arithmetic number, because the mean of its divisors is an integer number (1552031712).

Almost surely, 2^16291487919 is an apocalyptic number.

16291487919 is a deficient number, since it is larger than the sum of its proper divisors (8541019473).

16291487919 is a wasteful number, since it uses less digits than its factorization.

16291487919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230726.

The product of its digits is 1959552, while the sum is 57.

The spelling of 16291487919 in words is "sixteen billion, two hundred ninety-one million, four hundred eighty-seven thousand, nine hundred nineteen".