1218265071 has 8 divisors (see below), whose sum is σ = 1668255024. Its totient is φ = 790225920.

The previous prime is 1218265057. The next prime is 1218265117. The reversal of 1218265071 is 1705628121.

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

It is not a de Polignac number, because 1218265071 - 2⁶ = 1218265007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218265171) 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, 5487570 + ... + 5487791.

It is an arithmetic number, because the mean of its divisors is an integer number (208531878).

Almost surely, 2^1218265071 is an apocalyptic number.

1218265071 is a deficient number, since it is larger than the sum of its proper divisors (449989953).

1218265071 is a wasteful number, since it uses less digits than its factorization.

1218265071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975401.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1218265071 is about 34903.6541210229. The cubic root of 1218265071 is about 1068.0229807859.

The spelling of 1218265071 in words is "one billion, two hundred eighteen million, two hundred sixty-five thousand, seventy-one".