189163351 has 8 divisors (see below), whose sum is σ = 209220704. Its totient is φ = 169892640.

The previous prime is 189163349. The next prime is 189163361. The reversal of 189163351 is 153361981.

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

It is a cyclic number.

It is not a de Polignac number, because 189163351 - 2¹ = 189163349 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 self number, because there is not a number n which added to its sum of digits gives 189163351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189163361) 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, 196155 + ... + 197116.

It is an arithmetic number, because the mean of its divisors is an integer number (26152588).

Almost surely, 2^189163351 is an apocalyptic number.

189163351 is a deficient number, since it is larger than the sum of its proper divisors (20057353).

189163351 is a wasteful number, since it uses less digits than its factorization.

189163351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393321.

The product of its digits is 19440, while the sum is 37.

The square root of 189163351 is about 13753.6668201611. Note that the first 3 decimals coincide. The cubic root of 189163351 is about 574.0446401442.

The spelling of 189163351 in words is "one hundred eighty-nine million, one hundred sixty-three thousand, three hundred fifty-one".