16249938947 has 4 divisors (see below), whose sum is σ = 17727206136. Its totient is φ = 14772671760.

The previous prime is 16249938899. The next prime is 16249938953. The reversal of 16249938947 is 74983994261.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16249938947 - 2⁶ = 16249938883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16249938947.

It is not an unprimeable number, because it can be changed into a prime (16249938977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738633578 + ... + 738633599.

It is an arithmetic number, because the mean of its divisors is an integer number (4431801534).

Almost surely, 2^16249938947 is an apocalyptic number.

16249938947 is a deficient number, since it is larger than the sum of its proper divisors (1477267189).

16249938947 is a wasteful number, since it uses less digits than its factorization.

16249938947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477267188.

The product of its digits is 23514624, while the sum is 62.

The spelling of 16249938947 in words is "sixteen billion, two hundred forty-nine million, nine hundred thirty-eight thousand, nine hundred forty-seven".