2139564870 has 48 divisors (see below), whose sum is σ = 5629910832. Its totient is φ = 563674560.

The previous prime is 2139564839. The next prime is 2139564877. The reversal of 2139564870 is 784659312.

2139564870 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 564 + 87 + 0 = 666.

2139564870 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

2139564870 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139564877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135741 + ... + 150680.

It is an arithmetic number, because the mean of its divisors is an integer number (117289809).

It is a 1-persistent number, because it is pandigital, but 2⋅2139564870 = 4279129740 is not.

Almost surely, 2^2139564870 is an apocalyptic number.

2139564870 is an abundant number, since it is smaller than the sum of its proper divisors (3490345962).

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

2139564870 is a wasteful number, since it uses less digits than its factorization.

2139564870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286517 (or 286514 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2139564870 is about 46255.4307081882. The cubic root of 2139564870 is about 1288.5713948648.

It can be divided in two parts, 2139 and 564870, that added together give a square (567009 = 753²).

The spelling of 2139564870 in words is "two billion, one hundred thirty-nine million, five hundred sixty-four thousand, eight hundred seventy".