189949049 has 4 divisors (see below), whose sum is σ = 190650240. Its totient is φ = 189247860.

The previous prime is 189949021. The next prime is 189949063. The reversal of 189949049 is 940949981.

189949049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940949981 = 3217 ⋅292493.

It is a cyclic number.

It is not a de Polignac number, because 189949049 - 2⁸ = 189948793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189949079) 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, 350189 + ... + 350730.

It is an arithmetic number, because the mean of its divisors is an integer number (47662560).

Almost surely, 2^189949049 is an apocalyptic number.

It is an amenable number.

189949049 is a deficient number, since it is larger than the sum of its proper divisors (701191).

189949049 is an equidigital number, since it uses as much as digits as its factorization.

189949049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701190.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 189949049 is about 13782.2004411487. The cubic root of 189949049 is about 574.8383152205.

The spelling of 189949049 in words is "one hundred eighty-nine million, nine hundred forty-nine thousand, forty-nine".