16819274939 has 8 divisors (see below), whose sum is σ = 16997751120. Its totient is φ = 16640902656.

The previous prime is 16819274909. The next prime is 16819274957. The reversal of 16819274939 is 93947291861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16819274939 - 2¹² = 16819270843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16819274909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324392 + ... + 372650.

It is an arithmetic number, because the mean of its divisors is an integer number (2124718890).

Almost surely, 2^16819274939 is an apocalyptic number.

16819274939 is a deficient number, since it is larger than the sum of its proper divisors (178476181).

16819274939 is an equidigital number, since it uses as much as digits as its factorization.

16819274939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51949.

The product of its digits is 5878656, while the sum is 59.

The spelling of 16819274939 in words is "sixteen billion, eight hundred nineteen million, two hundred seventy-four thousand, nine hundred thirty-nine".