1213662164 has 96 divisors (see below), whose sum is σ = 2781475200. Its totient is φ = 453980160.

The previous prime is 1213662139. The next prime is 1213662167. The reversal of 1213662164 is 4612663121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213662164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213662167) 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 31 ways as a sum of consecutive naturals, for example, 181472 + ... + 188040.

It is an arithmetic number, because the mean of its divisors is an integer number (28973700).

Almost surely, 2^1213662164 is an apocalyptic number.

It is an amenable number.

1213662164 is an abundant number, since it is smaller than the sum of its proper divisors (1567813036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213662164 is a wasteful number, since it uses less digits than its factorization.

1213662164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633 (or 6631 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1213662164 is about 34837.6543986532. The cubic root of 1213662164 is about 1066.6761981353.

The spelling of 1213662164 in words is "one billion, two hundred thirteen million, six hundred sixty-two thousand, one hundred sixty-four".