2019190045 has 16 divisors (see below), whose sum is σ = 2589547968. Its totient is φ = 1506115840.

The previous prime is 2019190007. The next prime is 2019190091. The reversal of 2019190045 is 5400919102.

It is not a de Polignac number, because 2019190045 - 2¹⁷ = 2019058973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2019189989 and 2019190016.

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, 101911 + ... + 120100.

It is an arithmetic number, because the mean of its divisors is an integer number (161846748).

Almost surely, 2^2019190045 is an apocalyptic number.

It is an amenable number.

2019190045 is a deficient number, since it is larger than the sum of its proper divisors (570357923).

2019190045 is a wasteful number, since it uses less digits than its factorization.

2019190045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222140.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 2019190045 is about 44935.3985739528. The cubic root of 2019190045 is about 1263.9378868843.

The spelling of 2019190045 in words is "two billion, nineteen million, one hundred ninety thousand, forty-five".