1217863316 has 12 divisors (see below), whose sum is σ = 2156939232. Its totient is φ = 601594968.

The previous prime is 1217863301. The next prime is 1217863319. The reversal of 1217863316 is 6133687121.

It is a self number, because there is not a number n which added to its sum of digits gives 1217863316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217863319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833800 + ... + 1834463.

It is an arithmetic number, because the mean of its divisors is an integer number (179744936).

Almost surely, 2^1217863316 is an apocalyptic number.

It is an amenable number.

1217863316 is a deficient number, since it is larger than the sum of its proper divisors (939075916).

1217863316 is a wasteful number, since it uses less digits than its factorization.

1217863316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668350 (or 3668348 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 1217863316 is about 34897.8984467546. The cubic root of 1217863316 is about 1067.9055649737.

The spelling of 1217863316 in words is "one billion, two hundred seventeen million, eight hundred sixty-three thousand, three hundred sixteen".