3651050581 has 2 divisors, whose sum is σ = 3651050582. Its totient is φ = 3651050580.

The previous prime is 3651050573. The next prime is 3651050603. The reversal of 3651050581 is 1850501563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2920429681 + 730620900 = 54041^2 + 27030^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651050581 - 2³ = 3651050573 is a prime.

It is a super-2 number, since 2×3651050581² = 26660340690040875122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3651050531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825525290 + 1825525291.

It is an arithmetic number, because the mean of its divisors is an integer number (1825525291).

Almost surely, 2^3651050581 is an apocalyptic number.

It is an amenable number.

3651050581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651050581 is an equidigital number, since it uses as much as digits as its factorization.

3651050581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 3651050581 is about 60423.9239126358. The cubic root of 3651050581 is about 1539.8294325342.

The spelling of 3651050581 in words is "three billion, six hundred fifty-one million, fifty thousand, five hundred eighty-one".