190649389 has 8 divisors (see below), whose sum is σ = 218014848. Its totient is φ = 163316400.

The previous prime is 190649387. The next prime is 190649399. The reversal of 190649389 is 983946091.

190649389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190649389 - 2¹ = 190649387 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 (190649383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6144 + ... + 20470.

It is an arithmetic number, because the mean of its divisors is an integer number (27251856).

Almost surely, 2^190649389 is an apocalyptic number.

It is an amenable number.

190649389 is a deficient number, since it is larger than the sum of its proper divisors (27365459).

190649389 is a wasteful number, since it uses less digits than its factorization.

190649389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16235.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 190649389 is about 13807.5844737593. The cubic root of 190649389 is about 575.5439228675.

The spelling of 190649389 in words is "one hundred ninety million, six hundred forty-nine thousand, three hundred eighty-nine".