19749116206 has 16 divisors (see below), whose sum is σ = 31399208064. Its totient is φ = 9283934464.

The previous prime is 19749116131. The next prime is 19749116207. The reversal of 19749116206 is 60261194791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19749116207) 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, 272350 + ... + 337153.

It is an arithmetic number, because the mean of its divisors is an integer number (1962450504).

Almost surely, 2^19749116206 is an apocalyptic number.

19749116206 is a deficient number, since it is larger than the sum of its proper divisors (11650091858).

19749116206 is a wasteful number, since it uses less digits than its factorization.

19749116206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610475.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 19749116206 in words is "nineteen billion, seven hundred forty-nine million, one hundred sixteen thousand, two hundred six".