187948090 has 48 divisors (see below), whose sum is σ = 393774696. Its totient is φ = 64317440.

The previous prime is 187948087. The next prime is 187948109. The reversal of 187948090 is 90849781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 117874449 + 70073641 = 10857^2 + 8371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 187948090.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16002 + ... + 25138.

Almost surely, 2^187948090 is an apocalyptic number.

187948090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

187948090 is an abundant number, since it is smaller than the sum of its proper divisors (205826606).

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

187948090 is a wasteful number, since it uses less digits than its factorization.

187948090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9172 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 187948090 is about 13709.4161071871. The cubic root of 187948090 is about 572.8127007791.

The spelling of 187948090 in words is "one hundred eighty-seven million, nine hundred forty-eight thousand, ninety".