1214151566 has 16 divisors (see below), whose sum is σ = 1923642000. Its totient is φ = 573156288.

The previous prime is 1214151563. The next prime is 1214151581. The reversal of 1214151566 is 6651514121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214151563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43391 + ... + 65658.

It is an arithmetic number, because the mean of its divisors is an integer number (120227625).

Almost surely, 2^1214151566 is an apocalyptic number.

1214151566 is a deficient number, since it is larger than the sum of its proper divisors (709490434).

1214151566 is a wasteful number, since it uses less digits than its factorization.

1214151566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109363.

The product of its digits is 7200, while the sum is 32.

The square root of 1214151566 is about 34844.6777284566. The cubic root of 1214151566 is about 1066.8195557975.

Adding to 1214151566 its reverse (6651514121), we get a palindrome (7865665687).

The spelling of 1214151566 in words is "one billion, two hundred fourteen million, one hundred fifty-one thousand, five hundred sixty-six".