38549189789 has 16 divisors (see below), whose sum is σ = 42649396800. Its totient is φ = 34548716160.

The previous prime is 38549189753. The next prime is 38549189821. The reversal of 38549189789 is 98798194583.

It is a cyclic number.

It is not a de Polignac number, because 38549189789 - 2³² = 34254222493 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 (38549129789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1947062 + ... + 1966760.

It is an arithmetic number, because the mean of its divisors is an integer number (2665587300).

Almost surely, 2^38549189789 is an apocalyptic number.

It is an amenable number.

38549189789 is a deficient number, since it is larger than the sum of its proper divisors (4100207011).

38549189789 is a wasteful number, since it uses less digits than its factorization.

38549189789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22220.

The product of its digits is 156764160, while the sum is 71.

The spelling of 38549189789 in words is "thirty-eight billion, five hundred forty-nine million, one hundred eighty-nine thousand, seven hundred eighty-nine".