1213609288 has 16 divisors (see below), whose sum is σ = 2275965360. Its totient is φ = 606685200.

The previous prime is 1213609279. The next prime is 1213609337. The reversal of 1213609288 is 8829063121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213609288.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40243 + ... + 63613.

It is an arithmetic number, because the mean of its divisors is an integer number (142247835).

Almost surely, 2^1213609288 is an apocalyptic number.

It is an amenable number.

1213609288 is a deficient number, since it is larger than the sum of its proper divisors (1062356072).

1213609288 is a wasteful number, since it uses less digits than its factorization.

1213609288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868 (or 29864 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1213609288 is about 34836.8954988816. The cubic root of 1213609288 is about 1066.6607071716.

The spelling of 1213609288 in words is "one billion, two hundred thirteen million, six hundred nine thousand, two hundred eighty-eight".