938144490 has 128 divisors (see below), whose sum is σ = 2489564160. Its totient is φ = 225189888.

The previous prime is 938144489. The next prime is 938144491. The reversal of 938144490 is 94441839.

It is an interprime number because it is at equal distance from previous prime (938144489) and next prime (938144491).

It is not an unprimeable number, because it can be changed into a prime (938144491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2025999 + ... + 2026461.

It is an arithmetic number, because the mean of its divisors is an integer number (19449720).

Almost surely, 2^938144490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938144490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1244782080).

938144490 is an abundant number, since it is smaller than the sum of its proper divisors (1551419670).

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

938144490 is a wasteful number, since it uses less digits than its factorization.

938144490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 938144490 is about 30629.1444542612. The cubic root of 938144490 is about 978.9411338562.

The spelling of 938144490 in words is "nine hundred thirty-eight million, one hundred forty-four thousand, four hundred ninety".