189009464 has 32 divisors (see below), whose sum is σ = 413292000. Its totient is φ = 81002880.

The previous prime is 189009439. The next prime is 189009487. The reversal of 189009464 is 464900981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31697 + ... + 37184.

It is an arithmetic number, because the mean of its divisors is an integer number (12915375).

Almost surely, 2^189009464 is an apocalyptic number.

189009464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189009464 is an abundant number, since it is smaller than the sum of its proper divisors (224282536).

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

189009464 is an equidigital number, since it uses as much as digits as its factorization.

189009464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68908 (or 68890 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 189009464 is about 13748.0712829109. The cubic root of 189009464 is about 573.8889334976. Note that the first 3 decimals are identical.

The spelling of 189009464 in words is "one hundred eighty-nine million, nine thousand, four hundred sixty-four".