16949888357 has 4 divisors (see below), whose sum is σ = 16988150400. Its totient is φ = 16911626316.

The previous prime is 16949888339. The next prime is 16949888359. The reversal of 16949888357 is 75388894961.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-16949888357 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 (16949888359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19130357 + ... + 19131242.

It is an arithmetic number, because the mean of its divisors is an integer number (4247037600).

Almost surely, 2^16949888357 is an apocalyptic number.

It is an amenable number.

16949888357 is a deficient number, since it is larger than the sum of its proper divisors (38262043).

16949888357 is an equidigital number, since it uses as much as digits as its factorization.

16949888357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38262042.

The product of its digits is 104509440, while the sum is 68.

The spelling of 16949888357 in words is "sixteen billion, nine hundred forty-nine million, eight hundred eighty-eight thousand, three hundred fifty-seven".