19290919193830 has 64 divisors (see below), whose sum is σ = 36217112076288. Its totient is φ = 7389775054080.

The previous prime is 19290919193813. The next prime is 19290919193831. The reversal of 19290919193830 is 3839191909291.

It is a super-2 number, since 2×19290919193830² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19290919193831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45544887 + ... + 45966493.

It is an arithmetic number, because the mean of its divisors is an integer number (565892376192).

Almost surely, 2^{19290919193830} is an apocalyptic number.

19290919193830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19290919193830 is a deficient number, since it is larger than the sum of its proper divisors (16926192882458).

19290919193830 is a wasteful number, since it uses less digits than its factorization.

19290919193830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423181.

The product of its (nonzero) digits is 8503056, while the sum is 64.

The spelling of 19290919193830 in words is "nineteen trillion, two hundred ninety billion, nine hundred nineteen million, one hundred ninety-three thousand, eight hundred thirty".