38640164887 has 8 divisors (see below), whose sum is σ = 40322901600. Its totient is φ = 36957655680.

The previous prime is 38640164879. The next prime is 38640164903. The reversal of 38640164887 is 78846104683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38640164887 - 2³ = 38640164879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38640164987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353187 + ... + 449467.

It is an arithmetic number, because the mean of its divisors is an integer number (5040362700).

Almost surely, 2^38640164887 is an apocalyptic number.

38640164887 is a deficient number, since it is larger than the sum of its proper divisors (1682736713).

38640164887 is a wasteful number, since it uses less digits than its factorization.

38640164887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113753.

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 38640164887 in words is "thirty-eight billion, six hundred forty million, one hundred sixty-four thousand, eight hundred eighty-seven".