1215166303 has 8 divisors (see below), whose sum is σ = 1350855296. Its totient is φ = 1085508000.

The previous prime is 1215166289. The next prime is 1215166313. The reversal of 1215166303 is 3036615121.

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

It is a cyclic number.

It is not a de Polignac number, because 1215166303 - 2¹³ = 1215158111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215166313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507248 + ... + 1508053.

It is an arithmetic number, because the mean of its divisors is an integer number (168856912).

Almost surely, 2^1215166303 is an apocalyptic number.

1215166303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1215166303 is a deficient number, since it is larger than the sum of its proper divisors (135688993).

1215166303 is a wasteful number, since it uses less digits than its factorization.

1215166303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015345.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1215166303 is about 34859.2355481299. The cubic root of 1215166303 is about 1067.1166740665.

The spelling of 1215166303 in words is "one billion, two hundred fifteen million, one hundred sixty-six thousand, three hundred three".