36151681 has 2 divisors, whose sum is σ = 36151682. Its totient is φ = 36151680.

The previous prime is 36151679. The next prime is 36151757. The reversal of 36151681 is 18615163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24591681 + 11560000 = 4959^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 36151681 - 2¹ = 36151679 is a prime.

It is a super-2 number, since 2×36151681² = 2613888078251522, which contains 22 as substring.

Together with 36151679, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36151481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18075840 + 18075841.

It is an arithmetic number, because the mean of its divisors is an integer number (18075841).

Almost surely, 2^36151681 is an apocalyptic number.

It is an amenable number.

36151681 is a deficient number, since it is larger than the sum of its proper divisors (1).

36151681 is an equidigital number, since it uses as much as digits as its factorization.

36151681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 36151681 is about 6012.6267969998. The cubic root of 36151681 is about 330.6558155032.

The spelling of 36151681 in words is "thirty-six million, one hundred fifty-one thousand, six hundred eighty-one".