1520640116 has 12 divisors (see below), whose sum is σ = 2691021060. Its totient is φ = 751776960.

The previous prime is 1520640113. The next prime is 1520640127. The reversal of 1520640116 is 6110460251.

It can be written as a sum of positive squares in 2 ways, for example, as 748022500 + 772617616 = 27350^2 + 27796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520640113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135375 + ... + 2136086.

It is an arithmetic number, because the mean of its divisors is an integer number (224251755).

Almost surely, 2^1520640116 is an apocalyptic number.

It is an amenable number.

1520640116 is a deficient number, since it is larger than the sum of its proper divisors (1170380944).

1520640116 is a wasteful number, since it uses less digits than its factorization.

1520640116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271554 (or 4271552 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1520640116 is about 38995.3858296081. The cubic root of 1520640116 is about 1149.9407949356.

The spelling of 1520640116 in words is "one billion, five hundred twenty million, six hundred forty thousand, one hundred sixteen".