148169238 has 96 divisors (see below), whose sum is σ = 362120544. Its totient is φ = 40255488.

The previous prime is 148169233. The next prime is 148169251. The reversal of 148169238 is 832961841.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 148169238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148169233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576406 + ... + 576662.

It is an arithmetic number, because the mean of its divisors is an integer number (3772089).

Almost surely, 2^148169238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 148169238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181060272).

148169238 is an abundant number, since it is smaller than the sum of its proper divisors (213951306).

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

148169238 is a wasteful number, since it uses less digits than its factorization.

148169238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 359 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 148169238 is about 12172.4787122426. The cubic root of 148169238 is about 529.1587913378.

The spelling of 148169238 in words is "one hundred forty-eight million, one hundred sixty-nine thousand, two hundred thirty-eight".