189807680 has 28 divisors (see below), whose sum is σ = 451980300. Its totient is φ = 75922944.

The previous prime is 189807671. The next prime is 189807689. The reversal of 189807680 is 86708981.

It is an interprime number because it is at equal distance from previous prime (189807671) and next prime (189807689).

It can be written as a sum of positive squares in 2 ways, for example, as 42719296 + 147088384 = 6536^2 + 12128^2 .

It is not an unprimeable number, because it can be changed into a prime (189807689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296255 + ... + 296894.

Almost surely, 2^189807680 is an apocalyptic number.

189807680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189807680 is an abundant number, since it is smaller than the sum of its proper divisors (262172620).

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

189807680 is an equidigital number, since it uses as much as digits as its factorization.

189807680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593166 (or 593156 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 189807680 is about 13777.0708062345. The cubic root of 189807680 is about 574.6956726070.

The spelling of 189807680 in words is "one hundred eighty-nine million, eight hundred seven thousand, six hundred eighty".