8018537940 has 72 divisors (see below), whose sum is σ = 27797602560. Its totient is φ = 1832808384.

The previous prime is 8018537939. The next prime is 8018537941. The reversal of 8018537940 is 497358108.

It is an interprime number because it is at equal distance from previous prime (8018537939) and next prime (8018537941).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8018537941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3180700 + ... + 3183219.

Almost surely, 2^8018537940 is an apocalyptic number.

It is an amenable number.

8018537940 is an abundant number, since it is smaller than the sum of its proper divisors (19779064620).

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

8018537940 is a wasteful number, since it uses less digits than its factorization.

8018537940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363941 (or 6363936 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8018537940 is about 89546.2893703586. The cubic root of 8018537940 is about 2001.5436366198.

The spelling of 8018537940 in words is "eight billion, eighteen million, five hundred thirty-seven thousand, nine hundred forty".