1531054660 has 48 divisors (see below), whose sum is σ = 3323884032. Its totient is φ = 591782400.

The previous prime is 1531054649. The next prime is 1531054667. The reversal of 1531054660 is 664501351.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1531054667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544819 + ... + 547621.

It is an arithmetic number, because the mean of its divisors is an integer number (69247584).

Almost surely, 2^1531054660 is an apocalyptic number.

1531054660 is a gapful number since it is divisible by the number (10) 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 1531054660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661942016).

1531054660 is an abundant number, since it is smaller than the sum of its proper divisors (1792829372).

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

1531054660 is a wasteful number, since it uses less digits than its factorization.

1531054660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724 (or 3722 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1531054660 is about 39128.6935636752. The cubic root of 1531054660 is about 1152.5600585425.

The spelling of 1531054660 in words is "one billion, five hundred thirty-one million, fifty-four thousand, six hundred sixty".