1216262346 has 16 divisors (see below), whose sum is σ = 2619642144. Its totient is φ = 374234544.

The previous prime is 1216262269. The next prime is 1216262423. The reversal of 1216262346 is 6432626121.

It is an interprime number because it is at equal distance from previous prime (1216262269) and next prime (1216262423).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7796476 + ... + 7796631.

It is an arithmetic number, because the mean of its divisors is an integer number (163727634).

Almost surely, 2^1216262346 is an apocalyptic number.

1216262346 is an abundant number, since it is smaller than the sum of its proper divisors (1403379798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1216262346 is a wasteful number, since it uses less digits than its factorization.

1216262346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593125.

The product of its digits is 20736, while the sum is 33.

The square root of 1216262346 is about 34874.9529892156. The cubic root of 1216262346 is about 1067.4374132345.

Adding to 1216262346 its reverse (6432626121), we get a palindrome (7648888467).

The spelling of 1216262346 in words is "one billion, two hundred sixteen million, two hundred sixty-two thousand, three hundred forty-six".