1531150516 has 12 divisors (see below), whose sum is σ = 3062301088. Its totient is φ = 656207352.

The previous prime is 1531150501. The next prime is 1531150541. The reversal of 1531150516 is 6150511351.

1531150516 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 54683947 = 1531150516 / (1 + 5 + 3 + 1 + 1 + 5 + 0 + 5 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27341946 + ... + 27342001.

Almost surely, 2^1531150516 is an apocalyptic number.

It is an amenable number.

1531150516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1531150516 is a wasteful number, since it uses less digits than its factorization.

1531150516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54683958 (or 54683956 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 1531150516 is about 39129.9184256753. The cubic root of 1531150516 is about 1152.5841111328.

Adding to 1531150516 its reverse (6150511351), we get a palindrome (7681661867).

The spelling of 1531150516 in words is "one billion, five hundred thirty-one million, one hundred fifty thousand, five hundred sixteen".