3745864081 has 2 divisors, whose sum is σ = 3745864082. Its totient is φ = 3745864080.

The previous prime is 3745864061. The next prime is 3745864091. The reversal of 3745864081 is 1804685473.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2307937681 + 1437926400 = 48041^2 + 37920^2 .

It is a cyclic number.

It is not a de Polignac number, because 3745864081 - 2²³ = 3737475473 is a prime.

It is a super-2 number, since 2×3745864081² = 28062995426651949122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3745864051) 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 as a sum of consecutive naturals, namely, 1872932040 + 1872932041.

It is an arithmetic number, because the mean of its divisors is an integer number (1872932041).

Almost surely, 2^3745864081 is an apocalyptic number.

It is an amenable number.

3745864081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3745864081 is an equidigital number, since it uses as much as digits as its factorization.

3745864081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 3745864081 is about 61203.4646159840. The cubic root of 3745864081 is about 1553.0448756677.

The spelling of 3745864081 in words is "three billion, seven hundred forty-five million, eight hundred sixty-four thousand, eighty-one".