36778019 has 2 divisors, whose sum is σ = 36778020. Its totient is φ = 36778018.

The previous prime is 36777991. The next prime is 36778031. The reversal of 36778019 is 91087763.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36778019 is a prime.

It is a super-2 number, since 2×36778019² = 2705245363128722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (36778069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18389009 + 18389010.

It is an arithmetic number, because the mean of its divisors is an integer number (18389010).

Almost surely, 2^36778019 is an apocalyptic number.

36778019 is a deficient number, since it is larger than the sum of its proper divisors (1).

36778019 is an equidigital number, since it uses as much as digits as its factorization.

36778019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 36778019 is about 6064.4883543461. The cubic root of 36778019 is about 332.5544607120.

The spelling of 36778019 in words is "thirty-six million, seven hundred seventy-eight thousand, nineteen".