1518740137 has 8 divisors (see below), whose sum is σ = 1526562440. Its totient is φ = 1510928640.

The previous prime is 1518740099. The next prime is 1518740141. The reversal of 1518740137 is 7310478151.

It can be written as a sum of positive squares in 4 ways, for example, as 594823321 + 923916816 = 24389^2 + 30396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1518740137 - 2¹⁹ = 1518215849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1518740096 and 1518740105.

It is not an unprimeable number, because it can be changed into a prime (1518740537) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 534673 + ... + 537505.

It is an arithmetic number, because the mean of its divisors is an integer number (190820305).

Almost surely, 2^1518740137 is an apocalyptic number.

It is an amenable number.

1518740137 is a deficient number, since it is larger than the sum of its proper divisors (7822303).

1518740137 is a wasteful number, since it uses less digits than its factorization.

1518740137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1518740137 is about 38971.0166277453. The cubic root of 1518740137 is about 1149.4616603183.

The spelling of 1518740137 in words is "one billion, five hundred eighteen million, seven hundred forty thousand, one hundred thirty-seven".