193490490 has 64 divisors (see below), whose sum is σ = 510105600. Its totient is φ = 46753344.

The previous prime is 193490483. The next prime is 193490503. The reversal of 193490490 is 94094391.

193490490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5731 + ... + 20489.

It is an arithmetic number, because the mean of its divisors is an integer number (7970400).

Almost surely, 2^193490490 is an apocalyptic number.

193490490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 193490490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255052800).

193490490 is an abundant number, since it is smaller than the sum of its proper divisors (316615110).

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

193490490 is a wasteful number, since it uses less digits than its factorization.

193490490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14811.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 193490490 is about 13910.0859091524. The cubic root of 193490490 is about 578.3888002419.

The spelling of 193490490 in words is "one hundred ninety-three million, four hundred ninety thousand, four hundred ninety".