189344340 has 36 divisors (see below), whose sum is σ = 574345044. Its totient is φ = 50491776.

The previous prime is 189344333. The next prime is 189344359. The reversal of 189344340 is 43443981.

It can be written as a sum of positive squares in 2 ways, for example, as 24324624 + 165019716 = 4932^2 + 12846^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 189344295 and 189344304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525777 + ... + 526136.

It is an arithmetic number, because the mean of its divisors is an integer number (15954029).

Almost surely, 2^189344340 is an apocalyptic number.

189344340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189344340 is an abundant number, since it is smaller than the sum of its proper divisors (385000704).

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

189344340 is a wasteful number, since it uses less digits than its factorization.

189344340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051928 (or 1051923 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 189344340 is about 13760.2449106111. The cubic root of 189344340 is about 574.2276612334.

The spelling of 189344340 in words is "one hundred eighty-nine million, three hundred forty-four thousand, three hundred forty".