16291391629 has 4 divisors (see below), whose sum is σ = 16291977184. Its totient is φ = 16290806076.

The previous prime is 16291391621. The next prime is 16291391659. The reversal of 16291391629 is 92619319261.

16291391629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16291391629 - 2³ = 16291391621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16291391621) 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 3 ways as a sum of consecutive naturals, for example, 248847 + ... + 307420.

It is an arithmetic number, because the mean of its divisors is an integer number (4072994296).

Almost surely, 2^16291391629 is an apocalyptic number.

It is an amenable number.

16291391629 is a deficient number, since it is larger than the sum of its proper divisors (585555).

16291391629 is an equidigital number, since it uses as much as digits as its factorization.

16291391629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585554.

The product of its digits is 314928, while the sum is 49.

The spelling of 16291391629 in words is "sixteen billion, two hundred ninety-one million, three hundred ninety-one thousand, six hundred twenty-nine".