2121654792 has 16 divisors (see below), whose sum is σ = 5304137040. Its totient is φ = 707218256.

The previous prime is 2121654721. The next prime is 2121654793. The reversal of 2121654792 is 2974561212.

2121654792 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2121654792.

It is not an unprimeable number, because it can be changed into a prime (2121654793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44201118 + ... + 44201165.

It is an arithmetic number, because the mean of its divisors is an integer number (331508565).

Almost surely, 2^2121654792 is an apocalyptic number.

It is an amenable number.

2121654792 is an abundant number, since it is smaller than the sum of its proper divisors (3182482248).

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

2121654792 is a wasteful number, since it uses less digits than its factorization.

2121654792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88402292 (or 88402288 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 2121654792 is about 46061.4241204069. The cubic root of 2121654792 is about 1284.9658157823.

The spelling of 2121654792 in words is "two billion, one hundred twenty-one million, six hundred fifty-four thousand, seven hundred ninety-two".