19649995652 has 48 divisors (see below), whose sum is σ = 39791969280. Its totient is φ = 8316244992.

The previous prime is 19649995627. The next prime is 19649995669. The reversal of 19649995652 is 25659994691.

It is a super-2 number, since 2×19649995652² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146028 + ... + 2155164.

It is an arithmetic number, because the mean of its divisors is an integer number (828999360).

Almost surely, 2^19649995652 is an apocalyptic number.

It is an amenable number.

19649995652 is an abundant number, since it is smaller than the sum of its proper divisors (20141973628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19649995652 is a wasteful number, since it uses less digits than its factorization.

19649995652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100 (or 10098 counting only the distinct ones).

The product of its digits is 47239200, while the sum is 65.

The spelling of 19649995652 in words is "nineteen billion, six hundred forty-nine million, nine hundred ninety-five thousand, six hundred fifty-two".