3747381 has 8 divisors (see below), whose sum is σ = 5450784. Its totient is φ = 2271120.

The previous prime is 3747379. The next prime is 3747383. The reversal of 3747381 is 1837473.

It is an interprime number because it is at equal distance from previous prime (3747379) and next prime (3747383).

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

It is not a de Polignac number, because 3747381 - 2¹ = 3747379 is a prime.

It is a super-2 number, since 2×3747381² = 28085728718322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 113557 = 3747381 / (3 + 7 + 4 + 7 + 3 + 8 + 1).

It is a Curzon number.

3747381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3747383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56746 + ... + 56811.

It is an arithmetic number, because the mean of its divisors is an integer number (681348).

Almost surely, 2^3747381 is an apocalyptic number.

It is an amenable number.

3747381 is a deficient number, since it is larger than the sum of its proper divisors (1703403).

3747381 is a wasteful number, since it uses less digits than its factorization.

3747381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113571.

The product of its digits is 14112, while the sum is 33.

The square root of 3747381 is about 1935.8153321017. The cubic root of 3747381 is about 155.3254486881.

The spelling of 3747381 in words is "three million, seven hundred forty-seven thousand, three hundred eighty-one".