187981450 has 24 divisors (see below), whose sum is σ = 350111520. Its totient is φ = 75092400.

The previous prime is 187981429. The next prime is 187981481. The reversal of 187981450 is 54189781.

It is a happy number.

187981450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 187981397 and 187981406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43905 + ... + 47995.

It is an arithmetic number, because the mean of its divisors is an integer number (14587980).

Almost surely, 2^187981450 is an apocalyptic number.

187981450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

187981450 is a deficient number, since it is larger than the sum of its proper divisors (162130070).

187981450 is a wasteful number, since it uses less digits than its factorization.

187981450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 187981450 is about 13710.6327352169. The cubic root of 187981450 is about 572.8465893938.

The spelling of 187981450 in words is "one hundred eighty-seven million, nine hundred eighty-one thousand, four hundred fifty".