2019604861 has 8 divisors (see below), whose sum is σ = 2123504064. Its totient is φ = 1917046560.

The previous prime is 2019604859. The next prime is 2019604891. The reversal of 2019604861 is 1684069102.

It is a happy number.

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 2019604861 - 2¹ = 2019604859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2019604861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019604801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332136 + ... + 338161.

It is an arithmetic number, because the mean of its divisors is an integer number (265438008).

Almost surely, 2^2019604861 is an apocalyptic number.

It is an amenable number.

2019604861 is a deficient number, since it is larger than the sum of its proper divisors (103899203).

2019604861 is a wasteful number, since it uses less digits than its factorization.

2019604861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670451.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2019604861 is about 44940.0140298153. The cubic root of 2019604861 is about 1264.0244340884.

The spelling of 2019604861 in words is "two billion, nineteen million, six hundred four thousand, eight hundred sixty-one".