19155030804 has 216 divisors, whose sum is σ = 63851555040. Its totient is φ = 4785879168.

The previous prime is 19155030799. The next prime is 19155030833. The reversal of 19155030804 is 40803055191.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 413727 + ... + 457689.

Almost surely, 2^19155030804 is an apocalyptic number.

19155030804 is a gapful number since it is divisible by the number (14) 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 19155030804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31925777520).

19155030804 is an abundant number, since it is smaller than the sum of its proper divisors (44696524236).

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

19155030804 is a wasteful number, since it uses less digits than its factorization.

19155030804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44019 (or 44007 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

Adding to 19155030804 its reverse (40803055191), we get a palindrome (59958085995).

The spelling of 19155030804 in words is "nineteen billion, one hundred fifty-five million, thirty thousand, eight hundred four".