1540813000 has 32 divisors (see below), whose sum is σ = 3605504760. Its totient is φ = 616324800.

The previous prime is 1540812983. The next prime is 1540813009. The reversal of 1540813000 is 3180451.

It can be written as a sum of positive squares in 4 ways, for example, as 95140516 + 1445672484 = 9754^2 + 38022^2 .

It is not an unprimeable number, because it can be changed into a prime (1540813009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769407 + ... + 771406.

Almost surely, 2^1540813000 is an apocalyptic number.

1540813000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540813000 is an abundant number, since it is smaller than the sum of its proper divisors (2064691760).

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

1540813000 is a wasteful number, since it uses less digits than its factorization.

1540813000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540834 (or 1540820 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1540813000 is about 39253.1909530932. The cubic root of 1540813000 is about 1155.0035294083.

Adding to 1540813000 its reverse (3180451), we get a palindrome (1543993451).

The spelling of 1540813000 in words is "one billion, five hundred forty million, eight hundred thirteen thousand".