1889863313 has 8 divisors (see below), whose sum is σ = 2035895400. Its totient is φ = 1743925248.

The previous prime is 1889863309. The next prime is 1889863331. The reversal of 1889863313 is 3133689881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20857489 + 1869005824 = 4567^2 + 43232^2 .

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

It is not a de Polignac number, because 1889863313 - 2² = 1889863309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889863343) 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, 21443 + ... + 65111.

It is an arithmetic number, because the mean of its divisors is an integer number (254486925).

Almost surely, 2^1889863313 is an apocalyptic number.

1889863313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1889863313 is a deficient number, since it is larger than the sum of its proper divisors (146032087).

1889863313 is a wasteful number, since it uses less digits than its factorization.

1889863313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47011.

The product of its digits is 746496, while the sum is 50.

The square root of 1889863313 is about 43472.5581602923. The cubic root of 1889863313 is about 1236.3557836090.

The spelling of 1889863313 in words is "one billion, eight hundred eighty-nine million, eight hundred sixty-three thousand, three hundred thirteen".