19000045 has 8 divisors (see below), whose sum is σ = 22845024. Its totient is φ = 15170064.

The previous prime is 19000043. The next prime is 19000073. The reversal of 19000045 is 54000091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19000045 - 2¹ = 19000043 is a prime.

It is a super-2 number, since 2×19000045² = 722003420004050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18999986 and 19000031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (2855628).

Almost surely, 2^19000045 is an apocalyptic number.

It is an amenable number.

19000045 is a deficient number, since it is larger than the sum of its proper divisors (3844979).

19000045 is an equidigital number, since it uses as much as digits as its factorization.

19000045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 19000045 is about 4358.9041053916. The cubic root of 19000045 is about 266.8403755353.

The spelling of 19000045 in words is "nineteen million, forty-five", and thus it is an aban number and an uban number.