1982103077 has 2 divisors, whose sum is σ = 1982103078. Its totient is φ = 1982103076.

The previous prime is 1982103059. The next prime is 1982103113. The reversal of 1982103077 is 7703012891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1737305761 + 244797316 = 41681^2 + 15646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982103077 - 2¹⁸ = 1981840933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1982103077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982103007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991051538 + 991051539.

It is an arithmetic number, because the mean of its divisors is an integer number (991051539).

Almost surely, 2^1982103077 is an apocalyptic number.

It is an amenable number.

1982103077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982103077 is an equidigital number, since it uses as much as digits as its factorization.

1982103077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 1982103077 is about 44520.8162211791. The cubic root of 1982103077 is about 1256.1516657038.

The spelling of 1982103077 in words is "one billion, nine hundred eighty-two million, one hundred three thousand, seventy-seven".