1977316199 has 2 divisors, whose sum is σ = 1977316200. Its totient is φ = 1977316198.

The previous prime is 1977316181. The next prime is 1977316217. The reversal of 1977316199 is 9916137791.

It is a balanced prime because it is at equal distance from previous prime (1977316181) and next prime (1977316217).

It is a cyclic number.

It is not a de Polignac number, because 1977316199 - 2¹⁶ = 1977250663 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1977316199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1977316139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988658099 + 988658100.

It is an arithmetic number, because the mean of its divisors is an integer number (988658100).

Almost surely, 2^1977316199 is an apocalyptic number.

1977316199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977316199 is an equidigital number, since it uses as much as digits as its factorization.

1977316199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 53.

The square root of 1977316199 is about 44467.0237254530. The cubic root of 1977316199 is about 1255.1396275393.

The spelling of 1977316199 in words is "one billion, nine hundred seventy-seven million, three hundred sixteen thousand, one hundred ninety-nine".