3722956281 has 12 divisors (see below), whose sum is σ = 5866476720. Its totient is φ = 2256337080.

The previous prime is 3722956271. The next prime is 3722956301. The reversal of 3722956281 is 1826592273.

3722956281 is a `hidden beast` number, since 3 + 7 + 2 + 2 + 9 + 562 + 81 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-3722956281 is a prime.

It is a super-2 number, since 2×3722956281² = 27720806940474701922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3722956271) 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 11 ways as a sum of consecutive naturals, for example, 18802711 + ... + 18802908.

It is an arithmetic number, because the mean of its divisors is an integer number (488873060).

Almost surely, 2^3722956281 is an apocalyptic number.

It is an amenable number.

3722956281 is a deficient number, since it is larger than the sum of its proper divisors (2143520439).

3722956281 is a wasteful number, since it uses less digits than its factorization.

3722956281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37605636 (or 37605633 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 3722956281 is about 61016.0329831430. The cubic root of 3722956281 is about 1549.8725224332.

The spelling of 3722956281 in words is "three billion, seven hundred twenty-two million, nine hundred fifty-six thousand, two hundred eighty-one".