948225138 has 64 divisors (see below), whose sum is σ = 2211529728. Its totient is φ = 265446720.

The previous prime is 948225043. The next prime is 948225139. The reversal of 948225138 is 831522849.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 948225138.

It is not an unprimeable number, because it can be changed into a prime (948225139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592956 + ... + 594552.

It is an arithmetic number, because the mean of its divisors is an integer number (34555152).

Almost surely, 2^948225138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 948225138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105764864).

948225138 is an abundant number, since it is smaller than the sum of its proper divisors (1263304590).

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

948225138 is a wasteful number, since it uses less digits than its factorization.

948225138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887.

The product of its digits is 138240, while the sum is 42.

The square root of 948225138 is about 30793.2644907941. The cubic root of 948225138 is about 982.4349895152.

The spelling of 948225138 in words is "nine hundred forty-eight million, two hundred twenty-five thousand, one hundred thirty-eight".