38436203987 has 12 divisors (see below), whose sum is σ = 39733100784. Its totient is φ = 37177665840.

The previous prime is 38436203977. The next prime is 38436203989. The reversal of 38436203987 is 78930263483.

It is not a de Polignac number, because 38436203987 - 2¹⁰ = 38436202963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38436203989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89537 + ... + 291357.

It is an arithmetic number, because the mean of its divisors is an integer number (3311091732).

Almost surely, 2^38436203987 is an apocalyptic number.

38436203987 is a deficient number, since it is larger than the sum of its proper divisors (1296896797).

38436203987 is a wasteful number, since it uses less digits than its factorization.

38436203987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202010 (or 201967 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 38436203987 in words is "thirty-eight billion, four hundred thirty-six million, two hundred three thousand, nine hundred eighty-seven".