36978919 has 2 divisors, whose sum is σ = 36978920. Its totient is φ = 36978918.

The previous prime is 36978913. The next prime is 36978941. The reversal of 36978919 is 91987963.

It is a weak prime.

It is an emirp because it is prime and its reverse (91987963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36978919 - 2⁹ = 36978407 is a prime.

It is a super-2 number, since 2×36978919² = 2734880900817122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36978913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18489459 + 18489460.

It is an arithmetic number, because the mean of its divisors is an integer number (18489460).

Almost surely, 2^36978919 is an apocalyptic number.

36978919 is a deficient number, since it is larger than the sum of its proper divisors (1).

36978919 is an equidigital number, since it uses as much as digits as its factorization.

36978919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 52.

The square root of 36978919 is about 6081.0294358768. The cubic root of 36978919 is about 333.1588879446.

The spelling of 36978919 in words is "thirty-six million, nine hundred seventy-eight thousand, nine hundred nineteen".