1214145564 has 24 divisors (see below), whose sum is σ = 2836471680. Its totient is φ = 404220144.

The previous prime is 1214145509. The next prime is 1214145599. The reversal of 1214145564 is 4655414121.

It is a congruent number.

It is an unprimeable number.

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, 51594 + ... + 71345.

It is an arithmetic number, because the mean of its divisors is an integer number (118186320).

Almost surely, 2^1214145564 is an apocalyptic number.

It is an amenable number.

1214145564 is an abundant number, since it is smaller than the sum of its proper divisors (1622326116).

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

1214145564 is a wasteful number, since it uses less digits than its factorization.

1214145564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123769 (or 123767 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 1214145564 is about 34844.5916032890. The cubic root of 1214145564 is about 1066.8177979001.

Adding to 1214145564 its reverse (4655414121), we get a palindrome (5869559685).

The spelling of 1214145564 in words is "one billion, two hundred fourteen million, one hundred forty-five thousand, five hundred sixty-four".