2121381762 has 32 divisors (see below), whose sum is σ = 4302260160. Its totient is φ = 697273920.

The previous prime is 2121381751. The next prime is 2121381781. The reversal of 2121381762 is 2671831212.

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, 130308 + ... + 145680.

It is an arithmetic number, because the mean of its divisors is an integer number (134445630).

Almost surely, 2^2121381762 is an apocalyptic number.

2121381762 is an abundant number, since it is smaller than the sum of its proper divisors (2180878398).

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

2121381762 is a wasteful number, since it uses less digits than its factorization.

2121381762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698.

The product of its digits is 8064, while the sum is 33.

The square root of 2121381762 is about 46058.4602651891. The cubic root of 2121381762 is about 1284.9106938293.

The spelling of 2121381762 in words is "two billion, one hundred twenty-one million, three hundred eighty-one thousand, seven hundred sixty-two".