201512989 has 8 divisors (see below), whose sum is σ = 213636608. Its totient is φ = 189740880.

The previous prime is 201512953. The next prime is 201513023. The reversal of 201512989 is 989215102.

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-201512989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201512939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86697 + ... + 88990.

It is an arithmetic number, because the mean of its divisors is an integer number (26704576).

Almost surely, 2^201512989 is an apocalyptic number.

It is an amenable number.

201512989 is a deficient number, since it is larger than the sum of its proper divisors (12123619).

201512989 is a wasteful number, since it uses less digits than its factorization.

201512989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175755.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 201512989 is about 14195.5270772170. The cubic root of 201512989 is about 586.2745134874.

The spelling of 201512989 in words is "two hundred one million, five hundred twelve thousand, nine hundred eighty-nine".