2123436764 has 6 divisors (see below), whose sum is σ = 3716014344. Its totient is φ = 1061718380.

The previous prime is 2123436761. The next prime is 2123436787. The reversal of 2123436764 is 4676343212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123436761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265429592 + ... + 265429599.

It is an arithmetic number, because the mean of its divisors is an integer number (619335724).

Almost surely, 2^2123436764 is an apocalyptic number.

It is an amenable number.

2123436764 is a deficient number, since it is larger than the sum of its proper divisors (1592577580).

2123436764 is a wasteful number, since it uses less digits than its factorization.

2123436764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530859195 (or 530859193 counting only the distinct ones).

The product of its digits is 145152, while the sum is 38.

The square root of 2123436764 is about 46080.7634919388. The cubic root of 2123436764 is about 1285.3254615258.

Adding to 2123436764 its reverse (4676343212), we get a palindrome (6799779976).

The spelling of 2123436764 in words is "two billion, one hundred twenty-three million, four hundred thirty-six thousand, seven hundred sixty-four".