1540043330 has 16 divisors (see below), whose sum is σ = 3168089280. Its totient is φ = 528014832.

The previous prime is 1540043293. The next prime is 1540043333. The reversal of 1540043330 is 333400451.

It is a junction number, because it is equal to n+sod(n) for n = 1540043296 and 1540043305.

It is not an unprimeable number, because it can be changed into a prime (1540043333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11000240 + ... + 11000379.

It is an arithmetic number, because the mean of its divisors is an integer number (198005580).

Almost surely, 2^1540043330 is an apocalyptic number.

1540043330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540043330 is an abundant number, since it is smaller than the sum of its proper divisors (1628045950).

1540043330 is a wasteful number, since it uses less digits than its factorization.

1540043330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22000633.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1540043330 is about 39243.3858121340. The cubic root of 1540043330 is about 1154.8111808175.

Adding to 1540043330 its reverse (333400451), we get a palindrome (1873443781).

The spelling of 1540043330 in words is "one billion, five hundred forty million, forty-three thousand, three hundred thirty".