1996729807 has 4 divisors (see below), whose sum is σ = 2045430576. Its totient is φ = 1948029040.

The previous prime is 1996729789. The next prime is 1996729841. The reversal of 1996729807 is 7089276991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7089276991 = 757 ⋅9364963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996729807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996729877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24350323 + ... + 24350404.

It is an arithmetic number, because the mean of its divisors is an integer number (511357644).

Almost surely, 2^1996729807 is an apocalyptic number.

1996729807 is a deficient number, since it is larger than the sum of its proper divisors (48700769).

1996729807 is an equidigital number, since it uses as much as digits as its factorization.

1996729807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48700768.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The square root of 1996729807 is about 44684.7827229808. The cubic root of 1996729807 is about 1259.2339777826.

The spelling of 1996729807 in words is "one billion, nine hundred ninety-six million, seven hundred twenty-nine thousand, eight hundred seven".