1213501163 has 16 divisors (see below), whose sum is σ = 1405347840. Its totient is φ = 1026348000.

The previous prime is 1213501117. The next prime is 1213501171. The reversal of 1213501163 is 3611053121.

It is a cyclic number.

It is not a de Polignac number, because 1213501163 - 2¹⁰ = 1213500139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213501103) 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, 217118 + ... + 222636.

It is an arithmetic number, because the mean of its divisors is an integer number (87834240).

Almost surely, 2^1213501163 is an apocalyptic number.

1213501163 is a deficient number, since it is larger than the sum of its proper divisors (191846677).

1213501163 is a wasteful number, since it uses less digits than its factorization.

1213501163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1213501163 is about 34835.3435895213. The cubic root of 1213501163 is about 1066.6290286307.

Adding to 1213501163 its reverse (3611053121), we get a palindrome (4824554284).

The spelling of 1213501163 in words is "one billion, two hundred thirteen million, five hundred one thousand, one hundred sixty-three".