1996387049 has 2 divisors, whose sum is σ = 1996387050. Its totient is φ = 1996387048.

The previous prime is 1996387033. The next prime is 1996387123. The reversal of 1996387049 is 9407836991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162332649 + 834054400 = 34093^2 + 28880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996387049 - 2⁴ = 1996387033 is a prime.

It is a super-2 number, since 2×1996387049² = 7971122498829856802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1996386985 and 1996387003.

It is not a weakly prime, because it can be changed into another prime (1996387009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998193524 + 998193525.

It is an arithmetic number, because the mean of its divisors is an integer number (998193525).

Almost surely, 2^1996387049 is an apocalyptic number.

It is an amenable number.

1996387049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996387049 is an equidigital number, since it uses as much as digits as its factorization.

1996387049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 1996387049 is about 44680.9472706208. The cubic root of 1996387049 is about 1259.1619204254.

The spelling of 1996387049 in words is "one billion, nine hundred ninety-six million, three hundred eighty-seven thousand, forty-nine".