1212956673 has 16 divisors (see below), whose sum is σ = 1630829760. Its totient is φ = 801874944.

The previous prime is 1212956663. The next prime is 1212956707. The reversal of 1212956673 is 3766592121.

It is not a de Polignac number, because 1212956673 - 2⁶ = 1212956609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212956603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646665 + ... + 648537.

It is an arithmetic number, because the mean of its divisors is an integer number (101926860).

Almost surely, 2^1212956673 is an apocalyptic number.

It is an amenable number.

1212956673 is a deficient number, since it is larger than the sum of its proper divisors (417873087).

1212956673 is a wasteful number, since it uses less digits than its factorization.

1212956673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568.

The product of its digits is 136080, while the sum is 42.

The square root of 1212956673 is about 34827.5275177553. The cubic root of 1212956673 is about 1066.4694749520.

The spelling of 1212956673 in words is "one billion, two hundred twelve million, nine hundred fifty-six thousand, six hundred seventy-three".