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19357190980 = 225967859549
BaseRepresentation
bin10010000001110001…
…110100101101000100
31211222000222012001021
4102001301310231010
5304120420102410
612520443440524
71253455260061
oct220161645504
954860865037
1019357190980
1182336a20a6
123902826144
131a96470a7a
14d18b97c68
157845e3eda
hex481c74b44

19357190980 has 12 divisors (see below), whose sum is σ = 40650101100. Its totient is φ = 7742876384.

The previous prime is 19357190953. The next prime is 19357191001. The reversal of 19357190980 is 8909175391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12799754496 + 6557436484 = 113136^2 + 80978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483929755 + ... + 483929794.

It is an arithmetic number, because the mean of its divisors is an integer number (3387508425).

Almost surely, 219357190980 is an apocalyptic number.

19357190980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19357190980 is an abundant number, since it is smaller than the sum of its proper divisors (21292910120).

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

19357190980 is a wasteful number, since it uses less digits than its factorization.

19357190980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967859558 (or 967859556 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 52.

The spelling of 19357190980 in words is "nineteen billion, three hundred fifty-seven million, one hundred ninety thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 967859549 1935719098 3871438196 4839297745 9678595490 19357190980