1531488348 has 72 divisors (see below), whose sum is σ = 4177690608. Its totient is φ = 470251008.

The previous prime is 1531488341. The next prime is 1531488377. The reversal of 1531488348 is 8438841351.

1531488348 is a `hidden beast` number, since 1 + 531 + 4 + 88 + 34 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531488341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241636 + ... + 247892.

Almost surely, 2^1531488348 is an apocalyptic number.

1531488348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1531488348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088845304).

1531488348 is an abundant number, since it is smaller than the sum of its proper divisors (2646202260).

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

1531488348 is a wasteful number, since it uses less digits than its factorization.

1531488348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803 (or 6798 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 1531488348 is about 39134.2349867734. The cubic root of 1531488348 is about 1152.6688733552.

The spelling of 1531488348 in words is "one billion, five hundred thirty-one million, four hundred eighty-eight thousand, three hundred forty-eight".