2019807044 has 6 divisors (see below), whose sum is σ = 3534662334. Its totient is φ = 1009903520.

The previous prime is 2019807037. The next prime is 2019807047. The reversal of 2019807044 is 4407089102.

It can be written as a sum of positive squares in only one way, i.e., 2001488644 + 18318400 = 44738^2 + 4280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2019806995 and 2019807013.

It is not an unprimeable number, because it can be changed into a prime (2019807047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252475877 + ... + 252475884.

It is an arithmetic number, because the mean of its divisors is an integer number (589110389).

Almost surely, 2^2019807044 is an apocalyptic number.

It is an amenable number.

2019807044 is a deficient number, since it is larger than the sum of its proper divisors (1514855290).

2019807044 is a wasteful number, since it uses less digits than its factorization.

2019807044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504951765 (or 504951763 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2019807044 is about 44942.2634498976. The cubic root of 2019807044 is about 1264.0666132509.

The spelling of 2019807044 in words is "two billion, nineteen million, eight hundred seven thousand, forty-four".