2130978870 has 96 divisors (see below), whose sum is σ = 5767912800. Its totient is φ = 545190912.

The previous prime is 2130978869. The next prime is 2130978923. The reversal of 2130978870 is 788790312.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 422926 + ... + 427934.

It is an arithmetic number, because the mean of its divisors is an integer number (60082425).

Almost surely, 2^2130978870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130978870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2883956400).

2130978870 is an abundant number, since it is smaller than the sum of its proper divisors (3636933930).

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

2130978870 is a wasteful number, since it uses less digits than its factorization.

2130978870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214 (or 5211 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 2130978870 is about 46162.5266856137. The cubic root of 2130978870 is about 1286.8454198602.

The spelling of 2130978870 in words is "two billion, one hundred thirty million, nine hundred seventy-eight thousand, eight hundred seventy".