3601531897 has 2 divisors, whose sum is σ = 3601531898. Its totient is φ = 3601531896.

The previous prime is 3601531883. The next prime is 3601531961. The reversal of 3601531897 is 7981351063.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2909631481 + 691900416 = 53941^2 + 26304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3601531897 is a prime.

It is not a weakly prime, because it can be changed into another prime (3601531847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800765948 + 1800765949.

It is an arithmetic number, because the mean of its divisors is an integer number (1800765949).

Almost surely, 2^3601531897 is an apocalyptic number.

It is an amenable number.

3601531897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3601531897 is an equidigital number, since it uses as much as digits as its factorization.

3601531897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 3601531897 is about 60012.7644505733. The cubic root of 3601531897 is about 1532.8362241668.

The spelling of 3601531897 in words is "three billion, six hundred one million, five hundred thirty-one thousand, eight hundred ninety-seven".