1212846385 has 8 divisors (see below), whose sum is σ = 1541028456. Its totient is φ = 913201920.

The previous prime is 1212846367. The next prime is 1212846389. The reversal of 1212846385 is 5836482121.

It can be written as a sum of positive squares in 4 ways, for example, as 133263936 + 1079582449 = 11544^2 + 32857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212846385 - 2⁹ = 1212845873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212846389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7134306 + ... + 7134475.

It is an arithmetic number, because the mean of its divisors is an integer number (192628557).

Almost surely, 2^1212846385 is an apocalyptic number.

It is an amenable number.

1212846385 is a deficient number, since it is larger than the sum of its proper divisors (328182071).

1212846385 is a wasteful number, since it uses less digits than its factorization.

1212846385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268803.

The product of its digits is 92160, while the sum is 40.

The square root of 1212846385 is about 34825.9441365198. The cubic root of 1212846385 is about 1066.4371510851.

The spelling of 1212846385 in words is "one billion, two hundred twelve million, eight hundred forty-six thousand, three hundred eighty-five".