38187814409 has 4 divisors (see below), whose sum is σ = 38189064516. Its totient is φ = 38186564304.

The previous prime is 38187814403. The next prime is 38187814421. The reversal of 38187814409 is 90441878183.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35176878025 + 3010936384 = 187555^2 + 54872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38187814409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38187814403) 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, 578054 + ... + 640719.

It is an arithmetic number, because the mean of its divisors is an integer number (9547266129).

Almost surely, 2^38187814409 is an apocalyptic number.

It is an amenable number.

38187814409 is a deficient number, since it is larger than the sum of its proper divisors (1250107).

38187814409 is a wasteful number, since it uses less digits than its factorization.

38187814409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250106.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 38187814409 in words is "thirty-eight billion, one hundred eighty-seven million, eight hundred fourteen thousand, four hundred nine".