16031037891 has 32 divisors (see below), whose sum is σ = 23488535808. Its totient is φ = 9644941440.

The previous prime is 16031037877. The next prime is 16031037923. The reversal of 16031037891 is 19873013061.

It is not a de Polignac number, because 16031037891 - 2¹⁰ = 16031036867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16031037391) 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 31 ways as a sum of consecutive naturals, for example, 2583805 + ... + 2590001.

It is an arithmetic number, because the mean of its divisors is an integer number (734016744).

Almost surely, 2^16031037891 is an apocalyptic number.

16031037891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16031037891 is a deficient number, since it is larger than the sum of its proper divisors (7457497917).

16031037891 is a wasteful number, since it uses less digits than its factorization.

16031037891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771.

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 16031037891 in words is "sixteen billion, thirty-one million, thirty-seven thousand, eight hundred ninety-one".