190445380 has 12 divisors (see below), whose sum is σ = 399935340. Its totient is φ = 76178144.

The previous prime is 190445371. The next prime is 190445383. The reversal of 190445380 is 83544091.

It can be written as a sum of positive squares in 2 ways, for example, as 108868356 + 81577024 = 10434^2 + 9032^2 .

It is not an unprimeable number, because it can be changed into a prime (190445383) 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, 4761115 + ... + 4761154.

It is an arithmetic number, because the mean of its divisors is an integer number (33327945).

Almost surely, 2^190445380 is an apocalyptic number.

190445380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190445380 is an abundant number, since it is smaller than the sum of its proper divisors (209489960).

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

190445380 is a wasteful number, since it uses less digits than its factorization.

190445380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522278 (or 9522276 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 190445380 is about 13800.1949261596. The cubic root of 190445380 is about 575.3385580230.

The spelling of 190445380 in words is "one hundred ninety million, four hundred forty-five thousand, three hundred eighty".