1520316730 has 16 divisors (see below), whose sum is σ = 2880600480. Its totient is φ = 576119952.

The previous prime is 1520316719. The next prime is 1520316739. The reversal of 1520316730 is 376130251.

It is a super-2 number, since 2×1520316730² = 4622725919035785800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520316739) 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, 4000644 + ... + 4001023.

It is an arithmetic number, because the mean of its divisors is an integer number (180037530).

Almost surely, 2^1520316730 is an apocalyptic number.

1520316730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520316730 is a deficient number, since it is larger than the sum of its proper divisors (1360283750).

1520316730 is a wasteful number, since it uses less digits than its factorization.

1520316730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001693.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1520316730 is about 38991.2391441975. The cubic root of 1520316730 is about 1149.8592720045.

Adding to 1520316730 its reverse (376130251), we get a palindrome (1896446981).

The spelling of 1520316730 in words is "one billion, five hundred twenty million, three hundred sixteen thousand, seven hundred thirty".