191490244 has 81 divisors (see below), whose sum is σ = 402144519. Its totient is φ = 79706880.

The previous prime is 191490239. The next prime is 191490259. The reversal of 191490244 is 442094191.

The square root of 191490244 is 13838.

It is a perfect power (a square), and thus also a powerful number.

191490244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 89075844 + 102414400 = 9438^2 + 10120^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5175394 + ... + 5175430.

Almost surely, 2^191490244 is an apocalyptic number.

191490244 is the 13838-th square number.

It is an amenable number.

191490244 is an abundant number, since it is smaller than the sum of its proper divisors (210654275).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191490244 is a wasteful number, since it uses less digits than its factorization.

191490244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The cubic root of 191490244 is about 576.3888232784.

The spelling of 191490244 in words is "one hundred ninety-one million, four hundred ninety thousand, two hundred forty-four".