1996001289 has 24 divisors (see below), whose sum is σ = 2915624712. Its totient is φ = 1315699200.

The previous prime is 1996001269. The next prime is 1996001303. The reversal of 1996001289 is 9821006991.

1996001289 is a `hidden beast` number, since 19 + 9 + 600 + 1 + 28 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1396143225 + 599858064 = 37365^2 + 24492^2 .

It is not a de Polignac number, because 1996001289 - 2²⁹ = 1459130377 is a prime.

It is a super-2 number, since 2×1996001289² = 7968042291379323042, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1996001269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1178127 + ... + 1179819.

It is an arithmetic number, because the mean of its divisors is an integer number (121484363).

Almost surely, 2^1996001289 is an apocalyptic number.

It is an amenable number.

1996001289 is a deficient number, since it is larger than the sum of its proper divisors (919623423).

1996001289 is a wasteful number, since it uses less digits than its factorization.

1996001289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 1996001289 is about 44676.6302332663. The cubic root of 1996001289 is about 1259.0808129748.

The spelling of 1996001289 in words is "one billion, nine hundred ninety-six million, one thousand, two hundred eighty-nine".