19000057 has 4 divisors (see below), whose sum is σ = 20000080. Its totient is φ = 18000036.

The previous prime is 19000043. The next prime is 19000073. The reversal of 19000057 is 75000091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19000057 is a prime.

It is a super-2 number, since 2×19000057² = 722004332006498, which contains 22 as substring.

It is a Duffinian number.

19000057 is a modest number, since divided by 57 gives 19 as remainder.

It is not an unprimeable number, because it can be changed into a prime (19000027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499983 + ... + 500020.

It is an arithmetic number, because the mean of its divisors is an integer number (5000020).

Almost surely, 2^19000057 is an apocalyptic number.

It is an amenable number.

19000057 is a deficient number, since it is larger than the sum of its proper divisors (1000023).

19000057 is a wasteful number, since it uses less digits than its factorization.

19000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000022.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 19000057 is about 4358.9054818842. The cubic root of 19000057 is about 266.8404317121.

The spelling of 19000057 in words is "nineteen million, fifty-seven", and thus it is an aban number and an uban number.