1348021540 has 24 divisors (see below), whose sum is σ = 2841871032. Its totient is φ = 537108480.

The previous prime is 1348021537. The next prime is 1348021601. The reversal of 1348021540 is 451208431.

It can be written as a sum of positive squares in 4 ways, for example, as 663989824 + 684031716 = 25768^2 + 26154^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1348021499 and 1348021508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125991 + ... + 136270.

It is an arithmetic number, because the mean of its divisors is an integer number (118411293).

Almost surely, 2^1348021540 is an apocalyptic number.

1348021540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1348021540 is an abundant number, since it is smaller than the sum of its proper divisors (1493849492).

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

1348021540 is a wasteful number, since it uses less digits than its factorization.

1348021540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262527 (or 262525 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1348021540 is about 36715.4128398415. The cubic root of 1348021540 is about 1104.6692812619.

Adding to 1348021540 its reverse (451208431), we get a palindrome (1799229971).

The spelling of 1348021540 in words is "one billion, three hundred forty-eight million, twenty-one thousand, five hundred forty".