1200341989 has 32 divisors (see below), whose sum is σ = 1515386880. Its totient is φ = 923640000.

The previous prime is 1200341981. The next prime is 1200342019. The reversal of 1200341989 is 9891430021.

It is a cyclic number.

It is not a de Polignac number, because 1200341989 - 2³ = 1200341981 is a prime.

It is a super-2 number, since 2×1200341989² = 2881641781112952242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200341981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3343392 + ... + 3343750.

It is an arithmetic number, because the mean of its divisors is an integer number (47355840).

Almost surely, 2^1200341989 is an apocalyptic number.

It is an amenable number.

1200341989 is a deficient number, since it is larger than the sum of its proper divisors (315044891).

1200341989 is a wasteful number, since it uses less digits than its factorization.

1200341989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1200341989 is about 34645.9519857660. The cubic root of 1200341989 is about 1062.7595089113.

The spelling of 1200341989 in words is "one billion, two hundred million, three hundred forty-one thousand, nine hundred eighty-nine".