1996281730 has 32 divisors (see below), whose sum is σ = 3684661488. Its totient is φ = 778444800.

The previous prime is 1996281719. The next prime is 1996281799. The reversal of 1996281730 is 371826991.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 249292521 + 1746989209 = 15789^2 + 41797^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54450 + ... + 83410.

Almost surely, 2^1996281730 is an apocalyptic number.

1996281730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1996281730 is a deficient number, since it is larger than the sum of its proper divisors (1688379758).

1996281730 is a wasteful number, since it uses less digits than its factorization.

1996281730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29142.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1996281730 is about 44679.7686878524. The cubic root of 1996281730 is about 1259.1397777575.

The spelling of 1996281730 in words is "one billion, nine hundred ninety-six million, two hundred eighty-one thousand, seven hundred thirty".