19045081 has 8 divisors (see below), whose sum is σ = 21680064. Its totient is φ = 16560720.

The previous prime is 19045079. The next prime is 19045099. The reversal of 19045081 is 18054091.

It is a happy number.

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

It is not a de Polignac number, because 19045081 - 2¹ = 19045079 is a prime.

It is a super-2 number, since 2×19045081² = 725430220593122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19043081) 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, 37386 + ... + 37891.

It is an arithmetic number, because the mean of its divisors is an integer number (2710008).

Almost surely, 2^19045081 is an apocalyptic number.

19045081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19045081 is a deficient number, since it is larger than the sum of its proper divisors (2634983).

19045081 is a wasteful number, since it uses less digits than its factorization.

19045081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75311.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 19045081 is about 4364.0670251498. The cubic root of 19045081 is about 267.0510406615.

The spelling of 19045081 in words is "nineteen million, forty-five thousand, eighty-one".