1215054166 has 32 divisors (see below), whose sum is σ = 1930392000. Its totient is φ = 572436480.

The previous prime is 1215054163. The next prime is 1215054167. The reversal of 1215054166 is 6614505121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215054163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1837876 + ... + 1838536.

It is an arithmetic number, because the mean of its divisors is an integer number (60324750).

Almost surely, 2^1215054166 is an apocalyptic number.

1215054166 is a deficient number, since it is larger than the sum of its proper divisors (715337834).

1215054166 is a wasteful number, since it uses less digits than its factorization.

1215054166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1215054166 is about 34857.6270850441. The cubic root of 1215054166 is about 1067.0838481223.

Adding to 1215054166 its reverse (6614505121), we get a palindrome (7829559287).

The spelling of 1215054166 in words is "one billion, two hundred fifteen million, fifty-four thousand, one hundred sixty-six".