15949694408 has 12 divisors (see below), whose sum is σ = 29906346795. Its totient is φ = 7974668600.

The previous prime is 15949694407. The next prime is 15949694413. The reversal of 15949694408 is 80449694951.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

15949694408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7974847204 + 7974847204 = 89302^2 + 89302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=89302.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15949694407) 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 2 ways as a sum of consecutive naturals, for example, 334883 + ... + 379533.

Almost surely, 2^15949694408 is an apocalyptic number.

It is an amenable number.

15949694408 is a deficient number, since it is larger than the sum of its proper divisors (13956652387).

15949694408 is an frugal number, since it uses more digits than its factorization.

15949694408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89308 (or 44653 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 15949694408 in words is "fifteen billion, nine hundred forty-nine million, six hundred ninety-four thousand, four hundred eight".