1329149250 has 512 divisors, whose sum is σ = 4641960960. Its totient is φ = 279936000.

The previous prime is 1329149243. The next prime is 1329149287. The reversal of 1329149250 is 529419231.

1329149250 is a `hidden beast` number, since 1 + 32 + 91 + 492 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 78185242 + ... + 78185258.

It is an arithmetic number, because the mean of its divisors is an integer number (9066330).

Almost surely, 2^1329149250 is an apocalyptic number.

1329149250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1329149250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320980480).

1329149250 is an abundant number, since it is smaller than the sum of its proper divisors (3312811710).

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

1329149250 is a wasteful number, since it uses less digits than its factorization.

1329149250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1329149250 is about 36457.4992285538. The cubic root of 1329149250 is about 1099.4899150184.

The spelling of 1329149250 in words is "one billion, three hundred twenty-nine million, one hundred forty-nine thousand, two hundred fifty".