1540521064 has 32 divisors (see below), whose sum is σ = 3145356000. Its totient is φ = 704555712.

The previous prime is 1540521061. The next prime is 1540521067. The reversal of 1540521064 is 4601250451.

It is an interprime number because it is at equal distance from previous prime (1540521061) and next prime (1540521067).

It is not an unprimeable number, because it can be changed into a prime (1540521061) 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, 170334 + ... + 179149.

It is an arithmetic number, because the mean of its divisors is an integer number (98292375).

Almost surely, 2^1540521064 is an apocalyptic number.

It is an amenable number.

1540521064 is an abundant number, since it is smaller than the sum of its proper divisors (1604834936).

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

1540521064 is a wasteful number, since it uses less digits than its factorization.

1540521064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349537 (or 349533 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1540521064 is about 39249.4721493169. The cubic root of 1540521064 is about 1154.9305790875.

The spelling of 1540521064 in words is "one billion, five hundred forty million, five hundred twenty-one thousand, sixty-four".