9738203021 has 4 divisors (see below), whose sum is σ = 9739404444. Its totient is φ = 9737001600.

The previous prime is 9738203009. The next prime is 9738203029. The reversal of 9738203021 is 1203028379.

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 6290869225 + 3447333796 = 79315^2 + 58714^2 .

It is a cyclic number.

It is not a de Polignac number, because 9738203021 - 2²⁶ = 9671094157 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 (9738203029) 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, 588470 + ... + 604791.

It is an arithmetic number, because the mean of its divisors is an integer number (2434851111).

Almost surely, 2^9738203021 is an apocalyptic number.

It is an amenable number.

9738203021 is a deficient number, since it is larger than the sum of its proper divisors (1201423).

9738203021 is a wasteful number, since it uses less digits than its factorization.

9738203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201422.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 9738203021 is about 98682.3338850475. Note that the first 3 decimals coincide. The cubic root of 9738203021 is about 2135.4673783306.

The spelling of 9738203021 in words is "nine billion, seven hundred thirty-eight million, two hundred three thousand, twenty-one".