3784231613 has 4 divisors (see below), whose sum is σ = 3786918780. Its totient is φ = 3781544448.

The previous prime is 3784231579. The next prime is 3784231643. The reversal of 3784231613 is 3161324873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3161324873 = 7 ⋅451617839.

It can be written as a sum of positive squares in 2 ways, for example, as 24334489 + 3759897124 = 4933^2 + 61318^2 .

It is a cyclic number.

It is not a de Polignac number, because 3784231613 - 2⁸ = 3784231357 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 (3784231643) 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, 1341470 + ... + 1344287.

It is an arithmetic number, because the mean of its divisors is an integer number (946729695).

Almost surely, 2^3784231613 is an apocalyptic number.

It is an amenable number.

3784231613 is a deficient number, since it is larger than the sum of its proper divisors (2687167).

3784231613 is a wasteful number, since it uses less digits than its factorization.

3784231613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687166.

The product of its digits is 72576, while the sum is 38.

The square root of 3784231613 is about 61516.1085651555. The cubic root of 3784231613 is about 1558.3293001685.

The spelling of 3784231613 in words is "three billion, seven hundred eighty-four million, two hundred thirty-one thousand, six hundred thirteen".