1540316840 has 32 divisors (see below), whose sum is σ = 3577512960. Its totient is φ = 596251200.

The previous prime is 1540316839. The next prime is 1540316857. The reversal of 1540316840 is 486130451.

It is a junction number, because it is equal to n+sod(n) for n = 1540316797 and 1540316806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619856 + ... + 622335.

It is an arithmetic number, because the mean of its divisors is an integer number (111797280).

Almost surely, 2^1540316840 is an apocalyptic number.

1540316840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540316840 is an abundant number, since it is smaller than the sum of its proper divisors (2037196120).

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

1540316840 is a wasteful number, since it uses less digits than its factorization.

1540316840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242233 (or 1242229 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1540316840 is about 39246.8704484829. The cubic root of 1540316840 is about 1154.8795411689.

The spelling of 1540316840 in words is "one billion, five hundred forty million, three hundred sixteen thousand, eight hundred forty".