1996344257 has 4 divisors (see below), whose sum is σ = 1999928916. Its totient is φ = 1992759600.

The previous prime is 1996344247. The next prime is 1996344277. The reversal of 1996344257 is 7524436991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7524436991 = 10313 ⋅729607.

It can be written as a sum of positive squares in 2 ways, for example, as 335292721 + 1661051536 = 18311^2 + 40756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996344257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996344247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1791494 + ... + 1792607.

It is an arithmetic number, because the mean of its divisors is an integer number (499982229).

Almost surely, 2^1996344257 is an apocalyptic number.

It is an amenable number.

1996344257 is a deficient number, since it is larger than the sum of its proper divisors (3584659).

1996344257 is an equidigital number, since it uses as much as digits as its factorization.

1996344257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584658.

The product of its digits is 1632960, while the sum is 50.

The square root of 1996344257 is about 44680.4684062287. The cubic root of 1996344257 is about 1259.1529237662.

The spelling of 1996344257 in words is "one billion, nine hundred ninety-six million, three hundred forty-four thousand, two hundred fifty-seven".