1516031340 has 96 divisors (see below), whose sum is σ = 4409173440. Its totient is φ = 388878336.

The previous prime is 1516031339. The next prime is 1516031357. The reversal of 1516031340 is 431306151.

It is a self number, because there is not a number n which added to its sum of digits gives 1516031340.

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 31 ways as a sum of consecutive naturals, for example, 193744 + ... + 201416.

It is an arithmetic number, because the mean of its divisors is an integer number (45928890).

Almost surely, 2^1516031340 is an apocalyptic number.

1516031340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1516031340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204586720).

1516031340 is an abundant number, since it is smaller than the sum of its proper divisors (2893142100).

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

1516031340 is a wasteful number, since it uses less digits than its factorization.

1516031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811 (or 7809 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1516031340 is about 38936.2471227005. The cubic root of 1516031340 is about 1148.7778673919. Note that the first 3 decimals are identical.

Adding to 1516031340 its reverse (431306151), we get a palindrome (1947337491).

The spelling of 1516031340 in words is "one billion, five hundred sixteen million, thirty-one thousand, three hundred forty".