188640151 has 12 divisors (see below), whose sum is σ = 230989080. Its totient is φ = 153180720.

The previous prime is 188640149. The next prime is 188640163. The reversal of 188640151 is 151046881.

It is a happy number.

It is not a de Polignac number, because 188640151 - 2¹ = 188640149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188640451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100380 + ... + 102241.

It is an arithmetic number, because the mean of its divisors is an integer number (19249090).

Almost surely, 2^188640151 is an apocalyptic number.

188640151 is a deficient number, since it is larger than the sum of its proper divisors (42348929).

188640151 is a wasteful number, since it uses less digits than its factorization.

188640151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202654 (or 202647 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 188640151 is about 13734.6332677651. The cubic root of 188640151 is about 573.5149084240.

The spelling of 188640151 in words is "one hundred eighty-eight million, six hundred forty thousand, one hundred fifty-one".