1229521968 has 30 divisors (see below), whose sum is σ = 3440954244. Its totient is φ = 409840608.

The previous prime is 1229521949. The next prime is 1229521973. The reversal of 1229521968 is 8691259221.

It is a happy number.

1229521968 is a `hidden beast` number, since 12 + 29 + 521 + 96 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4269030 + ... + 4269317.

Almost surely, 2^1229521968 is an apocalyptic number.

1229521968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1229521968 is an abundant number, since it is smaller than the sum of its proper divisors (2211432276).

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

1229521968 is a wasteful number, since it uses less digits than its factorization.

1229521968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538361 (or 8538352 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1229521968 is about 35064.5400369091. The cubic root of 1229521968 is about 1071.3024486665.

The spelling of 1229521968 in words is "one billion, two hundred twenty-nine million, five hundred twenty-one thousand, nine hundred sixty-eight".