1350389521 has 8 divisors (see below), whose sum is σ = 1454642280. Its totient is φ = 1246190592.

The previous prime is 1350389503. The next prime is 1350389531. The reversal of 1350389521 is 1259830531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175271121 + 1175118400 = 13239^2 + 34280^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1350389521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1350389531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49635 + ... + 71863.

It is an arithmetic number, because the mean of its divisors is an integer number (181830285).

Almost surely, 2^1350389521 is an apocalyptic number.

It is an amenable number.

1350389521 is a deficient number, since it is larger than the sum of its proper divisors (104252759).

1350389521 is a wasteful number, since it uses less digits than its factorization.

1350389521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26915.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1350389521 is about 36747.6464688557. The cubic root of 1350389521 is about 1105.3157362321.

The spelling of 1350389521 in words is "one billion, three hundred fifty million, three hundred eighty-nine thousand, five hundred twenty-one".