189494748 has 24 divisors (see below), whose sum is σ = 491282960. Its totient is φ = 63164880.

The previous prime is 189494719. The next prime is 189494749. The reversal of 189494748 is 847494981.

189494748 is a `hidden beast` number, since 1 + 89 + 494 + 74 + 8 = 666.

189494748 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 189494694 and 189494703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189494749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877183 + ... + 877398.

Almost surely, 2^189494748 is an apocalyptic number.

189494748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189494748 is an abundant number, since it is smaller than the sum of its proper divisors (301788212).

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

189494748 is a wasteful number, since it uses less digits than its factorization.

189494748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754594 (or 1754586 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 189494748 is about 13765.7091353842. The cubic root of 189494748 is about 574.3796692537.

The spelling of 189494748 in words is "one hundred eighty-nine million, four hundred ninety-four thousand, seven hundred forty-eight".