1520865486 has 48 divisors (see below), whose sum is σ = 3782469600. Its totient is φ = 432627264.

The previous prime is 1520865461. The next prime is 1520865497. The reversal of 1520865486 is 6845680251.

1520865486 is a `hidden beast` number, since 1 + 5 + 20 + 86 + 548 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2500 + ... + 55208.

It is an arithmetic number, because the mean of its divisors is an integer number (78801450).

Almost surely, 2^1520865486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520865486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891234800).

1520865486 is an abundant number, since it is smaller than the sum of its proper divisors (2261604114).

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

1520865486 is a wasteful number, since it uses less digits than its factorization.

1520865486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52953 (or 52950 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 1520865486 is about 38998.2754234081. The cubic root of 1520865486 is about 1149.9976020114.

The spelling of 1520865486 in words is "one billion, five hundred twenty million, eight hundred sixty-five thousand, four hundred eighty-six".