1996435813 has 2 divisors, whose sum is σ = 1996435814. Its totient is φ = 1996435812.

The previous prime is 1996435801. The next prime is 1996435823. The reversal of 1996435813 is 3185346991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1725405444 + 271030369 = 41538^2 + 16463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996435813 - 2¹⁷ = 1996304741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996435823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998217906 + 998217907.

It is an arithmetic number, because the mean of its divisors is an integer number (998217907).

Almost surely, 2^1996435813 is an apocalyptic number.

It is an amenable number.

1996435813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996435813 is an equidigital number, since it uses as much as digits as its factorization.

1996435813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 49.

The square root of 1996435813 is about 44681.4929584946. The cubic root of 1996435813 is about 1259.1721724908.

The spelling of 1996435813 in words is "one billion, nine hundred ninety-six million, four hundred thirty-five thousand, eight hundred thirteen".