1540221016 has 16 divisors (see below), whose sum is σ = 3039910200. Its totient is φ = 729578304.

The previous prime is 1540220987. The next prime is 1540221017. The reversal of 1540221016 is 6101220451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540221017) 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 3 ways as a sum of consecutive naturals, for example, 5066365 + ... + 5066668.

Almost surely, 2^1540221016 is an apocalyptic number.

It is an amenable number.

1540221016 is a deficient number, since it is larger than the sum of its proper divisors (1499689184).

1540221016 is a wasteful number, since it uses less digits than its factorization.

1540221016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133058 (or 10133054 counting only the distinct ones).

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

The square root of 1540221016 is about 39245.6496442599. The cubic root of 1540221016 is about 1154.8555920979.

Adding to 1540221016 its reverse (6101220451), we get a palindrome (7641441467).

The spelling of 1540221016 in words is "one billion, five hundred forty million, two hundred twenty-one thousand, sixteen".