1996613281 has 8 divisors (see below), whose sum is σ = 2200204160. Its totient is φ = 1800166032.

The previous prime is 1996613219. The next prime is 1996613287. The reversal of 1996613281 is 1823166991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1996613281 - 2⁷ = 1996613153 is a prime.

It is a super-2 number, since 2×1996613281² = 7972929187731169922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996613287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785321 + ... + 1786438.

It is an arithmetic number, because the mean of its divisors is an integer number (275025520).

Almost surely, 2^1996613281 is an apocalyptic number.

It is an amenable number.

1996613281 is a deficient number, since it is larger than the sum of its proper divisors (203590879).

1996613281 is a wasteful number, since it uses less digits than its factorization.

1996613281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571815.

The product of its digits is 139968, while the sum is 46.

The square root of 1996613281 is about 44683.4788372615. The cubic root of 1996613281 is about 1259.2094816703.

The spelling of 1996613281 in words is "one billion, nine hundred ninety-six million, six hundred thirteen thousand, two hundred eighty-one".