3744813381 has 4 divisors (see below), whose sum is σ = 4993084512. Its totient is φ = 2496542252.

The previous prime is 3744813377. The next prime is 3744813409. The reversal of 3744813381 is 1833184473.

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 3744813381 - 2² = 3744813377 is a prime.

It is a super-2 number, since 2×3744813381² = 28047254517033302322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3744813581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624135561 + ... + 624135566.

It is an arithmetic number, because the mean of its divisors is an integer number (1248271128).

Almost surely, 2^3744813381 is an apocalyptic number.

It is an amenable number.

3744813381 is a deficient number, since it is larger than the sum of its proper divisors (1248271131).

3744813381 is a wasteful number, since it uses less digits than its factorization.

3744813381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248271130.

The product of its digits is 193536, while the sum is 42.

The square root of 3744813381 is about 61194.8803495848. The cubic root of 3744813381 is about 1552.8996544487.

The spelling of 3744813381 in words is "three billion, seven hundred forty-four million, eight hundred thirteen thousand, three hundred eighty-one".