187089538 has 16 divisors (see below), whose sum is σ = 291876480. Its totient is φ = 89861616.

The previous prime is 187089491. The next prime is 187089559. The reversal of 187089538 is 835980781.

It is a junction number, because it is equal to n+sod(n) for n = 187089491 and 187089500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10156 + ... + 21847.

It is an arithmetic number, because the mean of its divisors is an integer number (18242280).

Almost surely, 2^187089538 is an apocalyptic number.

187089538 is a deficient number, since it is larger than the sum of its proper divisors (104786942).

187089538 is a wasteful number, since it uses less digits than its factorization.

187089538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32121.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 187089538 is about 13678.0677728983. The cubic root of 187089538 is about 571.9391612963.

The spelling of 187089538 in words is "one hundred eighty-seven million, eighty-nine thousand, five hundred thirty-eight".