19080831630 has 128 divisors (see below), whose sum is σ = 52891776000. Its totient is φ = 4315244544.

The previous prime is 19080831589. The next prime is 19080831631. The reversal of 19080831630 is 3613808091.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19080831631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10186374 + ... + 10188246.

It is an arithmetic number, because the mean of its divisors is an integer number (413217000).

Almost surely, 2^19080831630 is an apocalyptic number.

19080831630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19080831630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26445888000).

19080831630 is an abundant number, since it is smaller than the sum of its proper divisors (33810944370).

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

19080831630 is a wasteful number, since it uses less digits than its factorization.

19080831630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 19080831630 in words is "nineteen billion, eighty million, eight hundred thirty-one thousand, six hundred thirty".