191448490 has 16 divisors (see below), whose sum is σ = 345720960. Its totient is φ = 76331920.

The previous prime is 191448457. The next prime is 191448497. The reversal of 191448490 is 94844191.

191448490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191448497) 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, 27670 + ... + 33889.

It is an arithmetic number, because the mean of its divisors is an integer number (21607560).

Almost surely, 2^191448490 is an apocalyptic number.

191448490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191448490 is a deficient number, since it is larger than the sum of its proper divisors (154272470).

191448490 is a wasteful number, since it uses less digits than its factorization.

191448490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61877.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 191448490 is about 13836.4912459771. The cubic root of 191448490 is about 576.3469268214.

The spelling of 191448490 in words is "one hundred ninety-one million, four hundred forty-eight thousand, four hundred ninety".