19102465980 has 384 divisors, whose sum is σ = 67195699200. Its totient is φ = 4472755200.

The previous prime is 19102465957. The next prime is 19102465997. The reversal of 19102465980 is 8956420191.

19102465980 is a `hidden beast` number, since 1 + 9 + 10 + 2 + 46 + 598 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13274101 + ... + 13275539.

It is an arithmetic number, because the mean of its divisors is an integer number (174988800).

Almost surely, 2^19102465980 is an apocalyptic number.

19102465980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19102465980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33597849600).

19102465980 is an abundant number, since it is smaller than the sum of its proper divisors (48093233220).

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

19102465980 is a wasteful number, since it uses less digits than its factorization.

19102465980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 19102465980 in words is "nineteen billion, one hundred two million, four hundred sixty-five thousand, nine hundred eighty".