9038865890 has 16 divisors (see below), whose sum is σ = 16283349432. Its totient is φ = 3612570624.

The previous prime is 9038865809. The next prime is 9038865893. The reversal of 9038865890 is 985688309.

It can be written as a sum of positive squares in 4 ways, for example, as 6071993929 + 2966871961 = 77923^2 + 54469^2 .

It is not an unprimeable number, because it can be changed into a prime (9038865893) 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, 359189 + ... + 383528.

Almost surely, 2^9038865890 is an apocalyptic number.

9038865890 is a deficient number, since it is larger than the sum of its proper divisors (7244483542).

9038865890 is a wasteful number, since it uses less digits than its factorization.

9038865890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743941.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 9038865890 is about 95072.9503591847. The cubic root of 9038865890 is about 2083.0737568999.

The spelling of 9038865890 in words is "nine billion, thirty-eight million, eight hundred sixty-five thousand, eight hundred ninety".