1328898551 has 16 divisors (see below), whose sum is σ = 1502012160. Its totient is φ = 1168191360.

The previous prime is 1328898499. The next prime is 1328898563. The reversal of 1328898551 is 1558988231.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328898551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328898551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328894551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6041 + ... + 51906.

It is an arithmetic number, because the mean of its divisors is an integer number (93875760).

Almost surely, 2^1328898551 is an apocalyptic number.

1328898551 is a deficient number, since it is larger than the sum of its proper divisors (173113609).

1328898551 is a wasteful number, since it uses less digits than its factorization.

1328898551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58054.

The product of its digits is 691200, while the sum is 50.

The square root of 1328898551 is about 36454.0608300365. The cubic root of 1328898551 is about 1099.4207834908.

The spelling of 1328898551 in words is "one billion, three hundred twenty-eight million, eight hundred ninety-eight thousand, five hundred fifty-one".