19012530 has 16 divisors (see below), whose sum is σ = 45630144. Its totient is φ = 5070000.

The previous prime is 19012519. The next prime is 19012583. The reversal of 19012530 is 3521091.

It is a super-2 number, since 2×19012530² = 722952594001800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19012497 and 19012506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316846 + ... + 316905.

It is an arithmetic number, because the mean of its divisors is an integer number (2851884).

Almost surely, 2^19012530 is an apocalyptic number.

19012530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19012530 is an abundant number, since it is smaller than the sum of its proper divisors (26617614).

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

19012530 is a wasteful number, since it uses less digits than its factorization.

19012530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633761.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 19012530 is about 4360.3359962278. The cubic root of 19012530 is about 266.8988100047.

It can be divided in two parts, 190 and 12530, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 19012530 in words is "nineteen million, twelve thousand, five hundred thirty".