1229213680 has 40 divisors (see below), whose sum is σ = 2860120512. Its totient is φ = 491307264.

The previous prime is 1229213669. The next prime is 1229213717. The reversal of 1229213680 is 863129221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 113794 + ... + 124126.

Almost surely, 2^1229213680 is an apocalyptic number.

1229213680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229213680 is an abundant number, since it is smaller than the sum of its proper divisors (1630906832).

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

1229213680 is a wasteful number, since it uses less digits than its factorization.

1229213680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11833 (or 11827 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1229213680 is about 35060.1437532706. The cubic root of 1229213680 is about 1071.2129024023.

The spelling of 1229213680 in words is "one billion, two hundred twenty-nine million, two hundred thirteen thousand, six hundred eighty".