38181375040 has 28 divisors (see below), whose sum is σ = 90919400076. Its totient is φ = 15272549888.

The previous prime is 38181374981. The next prime is 38181375077. The reversal of 38181375040 is 4057318183.

It can be written as a sum of positive squares in 2 ways, for example, as 27878313024 + 10303062016 = 166968^2 + 101504^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 38181374984 and 38181375002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59658079 + ... + 59658718.

Almost surely, 2^38181375040 is an apocalyptic number.

It is an amenable number.

38181375040 is an abundant number, since it is smaller than the sum of its proper divisors (52738025036).

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

38181375040 is a wasteful number, since it uses less digits than its factorization.

38181375040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119316814 (or 119316804 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 38181375040 in words is "thirty-eight billion, one hundred eighty-one million, three hundred seventy-five thousand, forty".