19740965199 has 32 divisors (see below), whose sum is σ = 28849582080. Its totient is φ = 11953190400.

The previous prime is 19740965183. The next prime is 19740965203. The reversal of 19740965199 is 99156904791.

It is not a de Polignac number, because 19740965199 - 2⁴ = 19740965183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19740965149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550189 + ... + 584969.

It is an arithmetic number, because the mean of its divisors is an integer number (901549440).

Almost surely, 2^19740965199 is an apocalyptic number.

19740965199 is a deficient number, since it is larger than the sum of its proper divisors (9108616881).

19740965199 is a wasteful number, since it uses less digits than its factorization.

19740965199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35191.

The product of its (nonzero) digits is 5511240, while the sum is 60.

The spelling of 19740965199 in words is "nineteen billion, seven hundred forty million, nine hundred sixty-five thousand, one hundred ninety-nine".