2051368872 has 64 divisors (see below), whose sum is σ = 5876008320. Its totient is φ = 584610048.

The previous prime is 2051368871. The next prime is 2051368889. The reversal of 2051368872 is 2788631502.

It is a super-2 number, since 2×2051368872² = 8416228498021104768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2051368871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51318 + ... + 82074.

It is an arithmetic number, because the mean of its divisors is an integer number (91812630).

Almost surely, 2^2051368872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051368872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2938004160).

2051368872 is an abundant number, since it is smaller than the sum of its proper divisors (3824639448).

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

2051368872 is a wasteful number, since it uses less digits than its factorization.

2051368872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31170 (or 31166 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 2051368872 is about 45292.0398304161. The cubic root of 2051368872 is about 1270.6167818558.

The spelling of 2051368872 in words is "two billion, fifty-one million, three hundred sixty-eight thousand, eight hundred seventy-two".