1018140136 has 32 divisors (see below), whose sum is σ = 2057176800. Its totient is φ = 469609920.

The previous prime is 1018140131. The next prime is 1018140163. The reversal of 1018140136 is 6310418101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1018140136.

It is not an unprimeable number, because it can be changed into a prime (1018140131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303991 + ... + 307321.

It is an arithmetic number, because the mean of its divisors is an integer number (64286775).

Almost surely, 2^1018140136 is an apocalyptic number.

It is an amenable number.

1018140136 is an abundant number, since it is smaller than the sum of its proper divisors (1039036664).

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

1018140136 is a wasteful number, since it uses less digits than its factorization.

1018140136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289 (or 6285 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1018140136 is about 31908.3082597621. The cubic root of 1018140136 is about 1006.0105133501.

Adding to 1018140136 its reverse (6310418101), we get a palindrome (7328558237).

The spelling of 1018140136 in words is "one billion, eighteen million, one hundred forty thousand, one hundred thirty-six".