188045071 has 4 divisors (see below), whose sum is σ = 197942200. Its totient is φ = 178147944.

The previous prime is 188045069. The next prime is 188045089. The reversal of 188045071 is 170540881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 188045071 - 2¹ = 188045069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188045771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4948536 + ... + 4948573.

It is an arithmetic number, because the mean of its divisors is an integer number (49485550).

Almost surely, 2^188045071 is an apocalyptic number.

188045071 is a deficient number, since it is larger than the sum of its proper divisors (9897129).

188045071 is an equidigital number, since it uses as much as digits as its factorization.

188045071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9897128.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 188045071 is about 13712.9526725647. The cubic root of 188045071 is about 572.9112074047.

The spelling of 188045071 in words is "one hundred eighty-eight million, forty-five thousand, seventy-one".