188349949 has 4 divisors (see below), whose sum is σ = 188453020. Its totient is φ = 188246880.

The previous prime is 188349947. The next prime is 188349971. The reversal of 188349949 is 949943881.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12124324 + 176225625 = 3482^2 + 13275^2 .

It is a cyclic number.

It is not a de Polignac number, because 188349949 - 2¹ = 188349947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188349949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188349947) 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, 48744 + ... + 52465.

It is an arithmetic number, because the mean of its divisors is an integer number (47113255).

Almost surely, 2^188349949 is an apocalyptic number.

It is an amenable number.

188349949 is a deficient number, since it is larger than the sum of its proper divisors (103071).

188349949 is a wasteful number, since it uses less digits than its factorization.

188349949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103070.

The product of its digits is 2239488, while the sum is 55.

The square root of 188349949 is about 13724.0645947183. The cubic root of 188349949 is about 573.2206610736.

The spelling of 188349949 in words is "one hundred eighty-eight million, three hundred forty-nine thousand, nine hundred forty-nine".