3726291081 has 16 divisors (see below), whose sum is σ = 5278621824. Its totient is φ = 2330075904.

The previous prime is 3726291067. The next prime is 3726291089. The reversal of 3726291081 is 1801926273.

It is not a de Polignac number, because 3726291081 - 2⁹ = 3726290569 is a prime.

It is a super-2 number, since 2×3726291081² = 27770490440680297122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3726291089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109741 + ... + 139626.

It is an arithmetic number, because the mean of its divisors is an integer number (329913864).

Almost surely, 2^3726291081 is an apocalyptic number.

It is an amenable number.

3726291081 is a deficient number, since it is larger than the sum of its proper divisors (1552330743).

3726291081 is a wasteful number, since it uses less digits than its factorization.

3726291081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249680.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 3726291081 is about 61043.3541100094. The cubic root of 3726291081 is about 1550.3351451493.

The spelling of 3726291081 in words is "three billion, seven hundred twenty-six million, two hundred ninety-one thousand, eighty-one".