1540550473 has 8 divisors (see below), whose sum is σ = 1920686400. Its totient is φ = 1200428880.

The previous prime is 1540550447. The next prime is 1540550477. The reversal of 1540550473 is 3740550451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1540550473 - 2¹³ = 1540542281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540550477) 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 in 7 ways as a sum of consecutive naturals, for example, 10003498 + ... + 10003651.

It is an arithmetic number, because the mean of its divisors is an integer number (240085800).

Almost surely, 2^1540550473 is an apocalyptic number.

It is an amenable number.

1540550473 is a deficient number, since it is larger than the sum of its proper divisors (380135927).

1540550473 is a wasteful number, since it uses less digits than its factorization.

1540550473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20007167.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 1540550473 is about 39249.8467895099. The cubic root of 1540550473 is about 1154.9379283622.

The spelling of 1540550473 in words is "one billion, five hundred forty million, five hundred fifty thousand, four hundred seventy-three".