189898519515 has 16 divisors (see below), whose sum is σ = 304108217088. Its totient is φ = 101189015136.

The previous prime is 189898519511. The next prime is 189898519523. The reversal of 189898519515 is 515915898981.

It is not a de Polignac number, because 189898519515 - 2² = 189898519511 is a prime.

It is a super-2 number, since 2×189898519515² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189898519515.

It is not an unprimeable number, because it can be changed into a prime (189898519511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5619799 + ... + 5653488.

It is an arithmetic number, because the mean of its divisors is an integer number (19006763568).

Almost surely, 2^189898519515 is an apocalyptic number.

189898519515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189898519515 is a deficient number, since it is larger than the sum of its proper divisors (114209697573).

189898519515 is a wasteful number, since it uses less digits than its factorization.

189898519515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274418.

The product of its digits is 46656000, while the sum is 69.

The spelling of 189898519515 in words is "one hundred eighty-nine billion, eight hundred ninety-eight million, five hundred nineteen thousand, five hundred fifteen".