1515601516 has 48 divisors (see below), whose sum is σ = 3120007968. Its totient is φ = 635097600.

The previous prime is 1515601471. The next prime is 1515601543. The reversal of 1515601516 is 6151065151.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681286 + ... + 683506.

It is an arithmetic number, because the mean of its divisors is an integer number (65000166).

Almost surely, 2^1515601516 is an apocalyptic number.

It is an amenable number.

1515601516 is an abundant number, since it is smaller than the sum of its proper divisors (1604406452).

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

1515601516 is a wasteful number, since it uses less digits than its factorization.

1515601516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1515601516 is about 38930.7271445063. The cubic root of 1515601516 is about 1148.6692902675.

Adding to 1515601516 its reverse (6151065151), we get a palindrome (7666666667).

The spelling of 1515601516 in words is "one billion, five hundred fifteen million, six hundred one thousand, five hundred sixteen".