1540152556 has 6 divisors (see below), whose sum is σ = 2695266980. Its totient is φ = 770076276.

The previous prime is 1540152469. The next prime is 1540152557. The reversal of 1540152556 is 6552510451.

It is not an unprimeable number, because it can be changed into a prime (1540152557) by changing a digit.

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 as a sum of consecutive naturals, namely, 192519066 + ... + 192519073.

Almost surely, 2^1540152556 is an apocalyptic number.

It is an amenable number.

1540152556 is a deficient number, since it is larger than the sum of its proper divisors (1155114424).

1540152556 is a wasteful number, since it uses less digits than its factorization.

1540152556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385038143 (or 385038141 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1540152556 is about 39244.7774359850. Note that the first 3 decimals coincide. The cubic root of 1540152556 is about 1154.8384814399.

The spelling of 1540152556 in words is "one billion, five hundred forty million, one hundred fifty-two thousand, five hundred fifty-six".