19675963620 has 72 divisors (see below), whose sum is σ = 59737237560. Its totient is φ = 5242222080.

The previous prime is 19675963609. The next prime is 19675963639. The reversal of 19675963620 is 2636957691.

19675963620 is a `hidden beast` number, since 1 + 9 + 6 + 7 + 5 + 9 + 6 + 3 + 620 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3531211776 + 16144751844 = 59424^2 + 127062^2 .

It is a Smith number, since the sum of its digits (54) 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 23 ways as a sum of consecutive naturals, for example, 154810 + ... + 251630.

It is an arithmetic number, because the mean of its divisors is an integer number (829683855).

Almost surely, 2^19675963620 is an apocalyptic number.

19675963620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19675963620 is an abundant number, since it is smaller than the sum of its proper divisors (40061273940).

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

19675963620 is a wasteful number, since it uses less digits than its factorization.

19675963620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97965 (or 97960 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

It can be divided in two parts, 1967596 and 3620, that added together give a square (1971216 = 1404²).

The spelling of 19675963620 in words is "nineteen billion, six hundred seventy-five million, nine hundred sixty-three thousand, six hundred twenty".