3728668423 has 4 divisors (see below), whose sum is σ = 3728808000. Its totient is φ = 3728528848.

The previous prime is 3728668421. The next prime is 3728668441. The reversal of 3728668423 is 3248668273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3248668273 = 2539 ⋅1279507.

It is a cyclic number.

It is not a de Polignac number, because 3728668423 - 2¹ = 3728668421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728668421) 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, 15790 + ... + 87787.

It is an arithmetic number, because the mean of its divisors is an integer number (932202000).

Almost surely, 2^3728668423 is an apocalyptic number.

3728668423 is a deficient number, since it is larger than the sum of its proper divisors (139577).

3728668423 is a wasteful number, since it uses less digits than its factorization.

3728668423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139576.

The product of its digits is 2322432, while the sum is 49.

The square root of 3728668423 is about 61062.8235753965. The cubic root of 3728668423 is about 1550.6647752688.

The spelling of 3728668423 in words is "three billion, seven hundred twenty-eight million, six hundred sixty-eight thousand, four hundred twenty-three".