36729881 has 2 divisors, whose sum is σ = 36729882. Its totient is φ = 36729880.

The previous prime is 36729871. The next prime is 36729883. The reversal of 36729881 is 18892763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 8904256 = 5275^2 + 2984^2 .

It is a cyclic number.

It is not a de Polignac number, because 36729881 - 2⁶ = 36729817 is a prime.

It is a super-2 number, since 2×36729881² = 2698168316548322, which contains 22 as substring.

Together with 36729883, 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 (36729883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18364940 + 18364941.

It is an arithmetic number, because the mean of its divisors is an integer number (18364941).

Almost surely, 2^36729881 is an apocalyptic number.

It is an amenable number.

36729881 is a deficient number, since it is larger than the sum of its proper divisors (1).

36729881 is an equidigital number, since it uses as much as digits as its factorization.

36729881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 36729881 is about 6060.5182121663. The cubic root of 36729881 is about 332.4093061102.

The spelling of 36729881 in words is "thirty-six million, seven hundred twenty-nine thousand, eight hundred eighty-one".