189249255 has 48 divisors (see below), whose sum is σ = 356874336. Its totient is φ = 92217600.

The previous prime is 189249251. The next prime is 189249299. The reversal of 189249255 is 552942981.

It is a happy number.

It is not a de Polignac number, because 189249255 - 2² = 189249251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189249255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189249251) 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, 57484 + ... + 60686.

It is an arithmetic number, because the mean of its divisors is an integer number (7434882).

Almost surely, 2^189249255 is an apocalyptic number.

189249255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189249255 is a deficient number, since it is larger than the sum of its proper divisors (167625081).

189249255 is a wasteful number, since it uses less digits than its factorization.

189249255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328 (or 3325 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 189249255 is about 13756.7894146854. The cubic root of 189249255 is about 574.1315231964.

The spelling of 189249255 in words is "one hundred eighty-nine million, two hundred forty-nine thousand, two hundred fifty-five".