189450580 has 24 divisors (see below), whose sum is σ = 434014560. Its totient is φ = 68891040.

The previous prime is 189450559. The next prime is 189450581. The reversal of 189450580 is 85054981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189450581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430350 + ... + 430789.

It is an arithmetic number, because the mean of its divisors is an integer number (18083940).

Almost surely, 2^189450580 is an apocalyptic number.

189450580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189450580 is an abundant number, since it is smaller than the sum of its proper divisors (244563980).

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

189450580 is a wasteful number, since it uses less digits than its factorization.

189450580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861159 (or 861157 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 189450580 is about 13764.1047656577. The cubic root of 189450580 is about 574.3350397450.

The spelling of 189450580 in words is "one hundred eighty-nine million, four hundred fifty thousand, five hundred eighty".