8736437881 has 2 divisors, whose sum is σ = 8736437882. Its totient is φ = 8736437880.

The previous prime is 8736437851. The next prime is 8736437939. The reversal of 8736437881 is 1887346378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8497889856 + 238548025 = 92184^2 + 15445^2 .

It is a cyclic number.

It is not a de Polignac number, because 8736437881 - 2⁵ = 8736437849 is a prime.

It is a super-2 number, since 2×8736437881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8736437851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4368218940 + 4368218941.

It is an arithmetic number, because the mean of its divisors is an integer number (4368218941).

Almost surely, 2^8736437881 is an apocalyptic number.

It is an amenable number.

8736437881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8736437881 is an equidigital number, since it uses as much as digits as its factorization.

8736437881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 55.

The square root of 8736437881 is about 93468.9139821363. The cubic root of 8736437881 is about 2059.5774639236.

The spelling of 8736437881 in words is "eight billion, seven hundred thirty-six million, four hundred thirty-seven thousand, eight hundred eighty-one".