1340535530 has 16 divisors (see below), whose sum is σ = 2478179880. Its totient is φ = 521721792.

The previous prime is 1340535499. The next prime is 1340535541. The reversal of 1340535530 is 355350431.

It can be written as a sum of positive squares in 4 ways, for example, as 1336852969 + 3682561 = 36563^2 + 1919^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1340535493 and 1340535502.

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, 1811165 + ... + 1811904.

Almost surely, 2^1340535530 is an apocalyptic number.

1340535530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340535530 is a deficient number, since it is larger than the sum of its proper divisors (1137644350).

1340535530 is a wasteful number, since it uses less digits than its factorization.

1340535530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623113.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 1340535530 is about 36613.3244871317. The cubic root of 1340535530 is about 1102.6206194956.

Adding to 1340535530 its reverse (355350431), we get a palindrome (1695885961).

The spelling of 1340535530 in words is "one billion, three hundred forty million, five hundred thirty-five thousand, five hundred thirty".