1520465713 has 8 divisors (see below), whose sum is σ = 1643799528. Its totient is φ = 1398042624.

The previous prime is 1520465701. The next prime is 1520465759. The reversal of 1520465713 is 3175640251.

It can be written as a sum of positive squares in 4 ways, for example, as 110313009 + 1410152704 = 10503^2 + 37552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520465713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520460713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224206 + ... + 230887.

It is an arithmetic number, because the mean of its divisors is an integer number (205474941).

Almost surely, 2^1520465713 is an apocalyptic number.

1520465713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1520465713 is a deficient number, since it is larger than the sum of its proper divisors (123333815).

1520465713 is a wasteful number, since it uses less digits than its factorization.

1520465713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455363.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1520465713 is about 38993.1495650198. The cubic root of 1520465713 is about 1149.8968308203.

The spelling of 1520465713 in words is "one billion, five hundred twenty million, four hundred sixty-five thousand, seven hundred thirteen".