188149450 has 12 divisors (see below), whose sum is σ = 349958070. Its totient is φ = 75259760.

The previous prime is 188149373. The next prime is 188149469. The reversal of 188149450 is 54941881.

It can be written as a sum of positive squares in 3 ways, for example, as 162231169 + 25918281 = 12737^2 + 5091^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1881445 + ... + 1881544.

Almost surely, 2^188149450 is an apocalyptic number.

188149450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188149450 is a deficient number, since it is larger than the sum of its proper divisors (161808620).

188149450 is a wasteful number, since it uses less digits than its factorization.

188149450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763001 (or 3762996 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 188149450 is about 13716.7579988859. The cubic root of 188149450 is about 573.0171905741.

The spelling of 188149450 in words is "one hundred eighty-eight million, one hundred forty-nine thousand, four hundred fifty".