189516516 has 144 divisors (see below), whose sum is σ = 547287552. Its totient is φ = 50803200.

The previous prime is 189516491. The next prime is 189516517. The reversal of 189516516 is 615615981.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (189516517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 674296 + ... + 674576.

It is an arithmetic number, because the mean of its divisors is an integer number (3800608).

Almost surely, 2^189516516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189516516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273643776).

189516516 is an abundant number, since it is smaller than the sum of its proper divisors (357771036).

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

189516516 is a wasteful number, since it uses less digits than its factorization.

189516516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 361 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The square root of 189516516 is about 13766.4997729997. The cubic root of 189516516 is about 574.4016621551.

The spelling of 189516516 in words is "one hundred eighty-nine million, five hundred sixteen thousand, five hundred sixteen".