2123645366 has 8 divisors (see below), whose sum is σ = 3192379344. Its totient is φ = 1059518920.

The previous prime is 2123645353. The next prime is 2123645369. The reversal of 2123645366 is 6635463212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123645369) 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, 1150730 + ... + 1152573.

It is an arithmetic number, because the mean of its divisors is an integer number (399047418).

Almost surely, 2^2123645366 is an apocalyptic number.

2123645366 is a deficient number, since it is larger than the sum of its proper divisors (1068733978).

2123645366 is a wasteful number, since it uses less digits than its factorization.

2123645366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303766.

The product of its digits is 155520, while the sum is 38.

The square root of 2123645366 is about 46083.0268754126. The cubic root of 2123645366 is about 1285.3675493787.

The spelling of 2123645366 in words is "two billion, one hundred twenty-three million, six hundred forty-five thousand, three hundred sixty-six".