188620461 has 16 divisors (see below), whose sum is σ = 288453120. Its totient is φ = 121690080.

The previous prime is 188620427. The next prime is 188620499. The reversal of 188620461 is 164026881.

It is not a de Polignac number, because 188620461 - 2¹⁴ = 188604077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188620261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 111840 + ... + 113513.

It is an arithmetic number, because the mean of its divisors is an integer number (18028320).

Almost surely, 2^188620461 is an apocalyptic number.

It is an amenable number.

188620461 is a deficient number, since it is larger than the sum of its proper divisors (99832659).

188620461 is a wasteful number, since it uses less digits than its factorization.

188620461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225393 (or 225387 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 188620461 is about 13733.9164479765. The cubic root of 188620461 is about 573.4949534968.

The spelling of 188620461 in words is "one hundred eighty-eight million, six hundred twenty thousand, four hundred sixty-one".