36981673 has 2 divisors, whose sum is σ = 36981674. Its totient is φ = 36981672.

The previous prime is 36981671. The next prime is 36981689. The reversal of 36981673 is 37618963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 16297369 = 4548^2 + 4037^2 .

It is an emirp because it is prime and its reverse (37618963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36981673 - 2¹ = 36981671 is a prime.

It is a super-3 number, since 3×36981673³ (a number of 24 digits) contains 333 as substring.

Together with 36981671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36981671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18490836 + 18490837.

It is an arithmetic number, because the mean of its divisors is an integer number (18490837).

Almost surely, 2^36981673 is an apocalyptic number.

It is an amenable number.

36981673 is a deficient number, since it is larger than the sum of its proper divisors (1).

36981673 is an equidigital number, since it uses as much as digits as its factorization.

36981673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 36981673 is about 6081.2558735840. The cubic root of 36981673 is about 333.1671583937.

The spelling of 36981673 in words is "thirty-six million, nine hundred eighty-one thousand, six hundred seventy-three".