1520323516 has 6 divisors (see below), whose sum is σ = 2660566160. Its totient is φ = 760161756.

The previous prime is 1520323499. The next prime is 1520323559. The reversal of 1520323516 is 6153230251.

It is a super-2 number, since 2×1520323516² = 4622767186605204512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190040436 + ... + 190040443.

Almost surely, 2^1520323516 is an apocalyptic number.

It is an amenable number.

1520323516 is a deficient number, since it is larger than the sum of its proper divisors (1140242644).

1520323516 is a wasteful number, since it uses less digits than its factorization.

1520323516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380080883 (or 380080881 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1520323516 is about 38991.3261636482. The cubic root of 1520323516 is about 1149.8609828176.

Adding to 1520323516 its reverse (6153230251), we get a palindrome (7673553767).

The spelling of 1520323516 in words is "one billion, five hundred twenty million, three hundred twenty-three thousand, five hundred sixteen".