1287200963 has 4 divisors (see below), whose sum is σ = 1288089528. Its totient is φ = 1286312400.

The previous prime is 1287200953. The next prime is 1287200987. The reversal of 1287200963 is 3690027821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3690027821 = 12479 ⋅295699.

It is a cyclic number.

It is not a de Polignac number, because 1287200963 - 2¹⁴ = 1287184579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1287200933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442106 + ... + 445007.

It is an arithmetic number, because the mean of its divisors is an integer number (322022382).

Almost surely, 2^1287200963 is an apocalyptic number.

1287200963 is a deficient number, since it is larger than the sum of its proper divisors (888565).

1287200963 is an equidigital number, since it uses as much as digits as its factorization.

1287200963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888564.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1287200963 is about 35877.5830150249. The cubic root of 1287200963 is about 1087.7993258583.

The spelling of 1287200963 in words is "one billion, two hundred eighty-seven million, two hundred thousand, nine hundred sixty-three".