1518155142 has 24 divisors (see below), whose sum is σ = 3532035096. Its totient is φ = 433758528.

The previous prime is 1518155141. The next prime is 1518155143. The reversal of 1518155142 is 2415518151.

It is an interprime number because it is at equal distance from previous prime (1518155141) and next prime (1518155143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518155141) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2581603 + ... + 2582190.

It is an arithmetic number, because the mean of its divisors is an integer number (147168129).

Almost surely, 2^1518155142 is an apocalyptic number.

1518155142 is an abundant number, since it is smaller than the sum of its proper divisors (2013879954).

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

1518155142 is a wasteful number, since it uses less digits than its factorization.

1518155142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163812 (or 5163805 counting only the distinct ones).

The product of its digits is 8000, while the sum is 33.

The square root of 1518155142 is about 38963.5103911339. The cubic root of 1518155142 is about 1149.3140564673.

The spelling of 1518155142 in words is "one billion, five hundred eighteen million, one hundred fifty-five thousand, one hundred forty-two".