19290235830 has 64 divisors (see below), whose sum is σ = 49060512000. Its totient is φ = 4840594560.

The previous prime is 19290235813. The next prime is 19290235859. The reversal of 19290235830 is 3853209291.

It is a super-2 number, since 2×19290235830² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28636 + ... + 198495.

It is an arithmetic number, because the mean of its divisors is an integer number (766570500).

Almost surely, 2^19290235830 is an apocalyptic number.

19290235830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19290235830 is an abundant number, since it is smaller than the sum of its proper divisors (29770276170).

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

19290235830 is a wasteful number, since it uses less digits than its factorization.

19290235830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227309.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 19290235830 in words is "nineteen billion, two hundred ninety million, two hundred thirty-five thousand, eight hundred thirty".