7138237240 has 16 divisors (see below), whose sum is σ = 16061033880. Its totient is φ = 2855294880.

The previous prime is 7138237237. The next prime is 7138237241. The reversal of 7138237240 is 427328317.

It is a self number, because there is not a number n which added to its sum of digits gives 7138237240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138237241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89227926 + ... + 89228005.

Almost surely, 2^7138237240 is an apocalyptic number.

It is an amenable number.

7138237240 is an abundant number, since it is smaller than the sum of its proper divisors (8922796640).

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

7138237240 is a wasteful number, since it uses less digits than its factorization.

7138237240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178455942 (or 178455938 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 7138237240 is about 84488.0893380836. The cubic root of 7138237240 is about 1925.4414900131.

The spelling of 7138237240 in words is "seven billion, one hundred thirty-eight million, two hundred thirty-seven thousand, two hundred forty".