3749286381 has 4 divisors (see below), whose sum is σ = 4999048512. Its totient is φ = 2499524252.

The previous prime is 3749286377. The next prime is 3749286461. The reversal of 3749286381 is 1836829473.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3749286381 - 2² = 3749286377 is a prime.

It is a super-3 number, since 3×3749286381³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3749286481) 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, 624881061 + ... + 624881066.

It is an arithmetic number, because the mean of its divisors is an integer number (1249762128).

Almost surely, 2^3749286381 is an apocalyptic number.

It is an amenable number.

3749286381 is a deficient number, since it is larger than the sum of its proper divisors (1249762131).

3749286381 is a wasteful number, since it uses less digits than its factorization.

3749286381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249762130.

The product of its digits is 1741824, while the sum is 51.

The square root of 3749286381 is about 61231.4166176155. The cubic root of 3749286381 is about 1553.5176964959.

The spelling of 3749286381 in words is "three billion, seven hundred forty-nine million, two hundred eighty-six thousand, three hundred eighty-one".