3967537481 has 2 divisors, whose sum is σ = 3967537482. Its totient is φ = 3967537480.

The previous prime is 3967537471. The next prime is 3967537489. The reversal of 3967537481 is 1847357693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3963961600 + 3575881 = 62960^2 + 1891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3967537481 is a prime.

It is a super-2 number, since 2×3967537481² = 31482707326279650722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3967537489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983768740 + 1983768741.

It is an arithmetic number, because the mean of its divisors is an integer number (1983768741).

Almost surely, 2^3967537481 is an apocalyptic number.

It is an amenable number.

3967537481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3967537481 is an equidigital number, since it uses as much as digits as its factorization.

3967537481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 3967537481 is about 62988.3916368723. The cubic root of 3967537481 is about 1583.0951293829.

The spelling of 3967537481 in words is "three billion, nine hundred sixty-seven million, five hundred thirty-seven thousand, four hundred eighty-one".