1520012315 has 4 divisors (see below), whose sum is σ = 1824014784. Its totient is φ = 1216009848.

The previous prime is 1520012287. The next prime is 1520012371. The reversal of 1520012315 is 5132100251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1520012315 - 2¹⁴ = 1519995931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152001227 + ... + 152001236.

It is an arithmetic number, because the mean of its divisors is an integer number (456003696).

Almost surely, 2^1520012315 is an apocalyptic number.

1520012315 is a deficient number, since it is larger than the sum of its proper divisors (304002469).

1520012315 is an equidigital number, since it uses as much as digits as its factorization.

1520012315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304002468.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1520012315 is about 38987.3353154585. The cubic root of 1520012315 is about 1149.7825209414.

Adding to 1520012315 its reverse (5132100251), we get a palindrome (6652112566).

The spelling of 1520012315 in words is "one billion, five hundred twenty million, twelve thousand, three hundred fifteen".