19000055 has 16 divisors (see below), whose sum is σ = 24178944. Its totient is φ = 14307840.

The previous prime is 19000043. The next prime is 19000073. The reversal of 19000055 is 55000091.

It is not a de Polignac number, because 19000055 - 2⁶ = 18999991 is a prime.

It is a super-2 number, since 2×19000055² = 722004180006050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4079 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (1511184).

Almost surely, 2^19000055 is an apocalyptic number.

19000055 is a deficient number, since it is larger than the sum of its proper divisors (5178889).

19000055 is a wasteful number, since it uses less digits than its factorization.

19000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 19000055 is about 4358.9052524688. The cubic root of 19000055 is about 266.8404223493.

The spelling of 19000055 in words is "nineteen million, fifty-five", and thus it is an aban number and an uban number.