19849764407 has 8 divisors (see below), whose sum is σ = 21655700352. Its totient is φ = 18044063800.

The previous prime is 19849764401. The next prime is 19849764409. The reversal of 19849764407 is 70446794891.

It is a happy number.

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 19849764407 - 2²⁴ = 19832987191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19849764401) 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, 149678 + ... + 249204.

It is an arithmetic number, because the mean of its divisors is an integer number (2706962544).

Almost surely, 2^19849764407 is an apocalyptic number.

19849764407 is a deficient number, since it is larger than the sum of its proper divisors (1805935945).

19849764407 is a wasteful number, since it uses less digits than its factorization.

19849764407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117669.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 19849764407 in words is "nineteen billion, eight hundred forty-nine million, seven hundred sixty-four thousand, four hundred seven".