1521472645 has 64 divisors (see below), whose sum is σ = 2324754432. Its totient is φ = 928512000.

The previous prime is 1521472607. The next prime is 1521472651. The reversal of 1521472645 is 5462741251.

It is not a de Polignac number, because 1521472645 - 2⁹ = 1521472133 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4892040 + ... + 4892350.

It is an arithmetic number, because the mean of its divisors is an integer number (36324288).

Almost surely, 2^1521472645 is an apocalyptic number.

It is an amenable number.

1521472645 is a deficient number, since it is larger than the sum of its proper divisors (803281787).

1521472645 is a wasteful number, since it uses less digits than its factorization.

1521472645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 67200, while the sum is 37.

The square root of 1521472645 is about 39006.0590806095. The cubic root of 1521472645 is about 1150.1506154337.

The spelling of 1521472645 in words is "one billion, five hundred twenty-one million, four hundred seventy-two thousand, six hundred forty-five".