1871013997 has 2 divisors, whose sum is σ = 1871013998. Its totient is φ = 1871013996.

The previous prime is 1871013983. The next prime is 1871014007. The reversal of 1871013997 is 7993101781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221222916 + 649791081 = 34946^2 + 25491^2 .

It is a cyclic number.

It is not a de Polignac number, because 1871013997 - 2⁷ = 1871013869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1871013497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 935506998 + 935506999.

It is an arithmetic number, because the mean of its divisors is an integer number (935506999).

Almost surely, 2^1871013997 is an apocalyptic number.

It is an amenable number.

1871013997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1871013997 is an equidigital number, since it uses as much as digits as its factorization.

1871013997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 46.

The square root of 1871013997 is about 43255.2193035708. The cubic root of 1871013997 is about 1232.2316102354.

The spelling of 1871013997 in words is "one billion, eight hundred seventy-one million, thirteen thousand, nine hundred ninety-seven".