3732666281 has 4 divisors (see below), whose sum is σ = 3823706964. Its totient is φ = 3641625600.

The previous prime is 3732666269. The next prime is 3732666293. The reversal of 3732666281 is 1826662373.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1826662373 = 277 ⋅6594449.

It is an interprime number because it is at equal distance from previous prime (3732666269) and next prime (3732666293).

It can be written as a sum of positive squares in 2 ways, for example, as 525143056 + 3207523225 = 22916^2 + 56635^2 .

It is a cyclic number.

It is not a de Polignac number, because 3732666281 - 2²⁶ = 3665557417 is a prime.

It is a super-2 number, since 2×3732666281² = 27865595130628741922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3732666781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45520280 + ... + 45520361.

It is an arithmetic number, because the mean of its divisors is an integer number (955926741).

Almost surely, 2^3732666281 is an apocalyptic number.

It is an amenable number.

3732666281 is a deficient number, since it is larger than the sum of its proper divisors (91040683).

3732666281 is an equidigital number, since it uses as much as digits as its factorization.

3732666281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91040682.

The product of its digits is 435456, while the sum is 44.

The square root of 3732666281 is about 61095.5504189953. The cubic root of 3732666281 is about 1551.2187820938.

The spelling of 3732666281 in words is "three billion, seven hundred thirty-two million, six hundred sixty-six thousand, two hundred eighty-one".