2120974860 has 24 divisors (see below), whose sum is σ = 5938729776. Its totient is φ = 565593280.

The previous prime is 2120974837. The next prime is 2120974861. The reversal of 2120974860 is 684790212.

It is not an unprimeable number, because it can be changed into a prime (2120974861) 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, 17674731 + ... + 17674850.

It is an arithmetic number, because the mean of its divisors is an integer number (247447074).

Almost surely, 2^2120974860 is an apocalyptic number.

2120974860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120974860 is an abundant number, since it is smaller than the sum of its proper divisors (3817754916).

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

2120974860 is a wasteful number, since it uses less digits than its factorization.

2120974860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35349593 (or 35349591 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 2120974860 is about 46054.0428192792. The cubic root of 2120974860 is about 1284.8285357170.

It can be divided in two parts, 21209 and 74860, that added together give a palindrome (96069).

The spelling of 2120974860 in words is "two billion, one hundred twenty million, nine hundred seventy-four thousand, eight hundred sixty".