1212785963 has 8 divisors (see below), whose sum is σ = 1257660768. Its totient is φ = 1168547904.

The previous prime is 1212785953. The next prime is 1212785971. The reversal of 1212785963 is 3695872121.

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 1212785963 - 2²⁸ = 944350507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212785953) 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 7 ways as a sum of consecutive naturals, for example, 155306 + ... + 162927.

It is an arithmetic number, because the mean of its divisors is an integer number (157207596).

Almost surely, 2^1212785963 is an apocalyptic number.

1212785963 is a deficient number, since it is larger than the sum of its proper divisors (44874805).

1212785963 is a wasteful number, since it uses less digits than its factorization.

1212785963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318373.

The product of its digits is 181440, while the sum is 44.

The square root of 1212785963 is about 34825.0766402602. The cubic root of 1212785963 is about 1066.4194414129.

The spelling of 1212785963 in words is "one billion, two hundred twelve million, seven hundred eighty-five thousand, nine hundred sixty-three".