2019936864 has 96 divisors (see below), whose sum is σ = 5863826304. Its totient is φ = 603694080.

The previous prime is 2019936857. The next prime is 2019936883. The reversal of 2019936864 is 4686399102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 63987 + ... + 90189.

It is an arithmetic number, because the mean of its divisors is an integer number (61081524).

Almost surely, 2^2019936864 is an apocalyptic number.

2019936864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019936864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2931913152).

2019936864 is an abundant number, since it is smaller than the sum of its proper divisors (3843889440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2019936864 is a wasteful number, since it uses less digits than its factorization.

2019936864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26300 (or 26292 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 2019936864 is about 44943.7077242187. The cubic root of 2019936864 is about 1264.0936946516.

The spelling of 2019936864 in words is "two billion, nineteen million, nine hundred thirty-six thousand, eight hundred sixty-four".