38509497140 has 48 divisors (see below), whose sum is σ = 83662083792. Its totient is φ = 14878043136.

The previous prime is 38509497109. The next prime is 38509497203. The reversal of 38509497140 is 4179490583.

38509497140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1105163536 + 37404333604 = 33244^2 + 193402^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88547 + ... + 291306.

It is an arithmetic number, because the mean of its divisors is an integer number (1742960079).

Almost surely, 2^38509497140 is an apocalyptic number.

It is an amenable number.

38509497140 is an abundant number, since it is smaller than the sum of its proper divisors (45152586652).

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

38509497140 is a wasteful number, since it uses less digits than its factorization.

38509497140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380036 (or 380034 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 38509497140 in words is "thirty-eight billion, five hundred nine million, four hundred ninety-seven thousand, one hundred forty".