2393837123209 has 27 divisors (see below), whose sum is σ = 2819680942413. Its totient is φ = 2026377957912.

The previous prime is 2393837123159. The next prime is 2393837123221. The reversal of 2393837123209 is 9023217383932.

The square root of 2393837123209 is 1547203.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2393837123209 - 2⁹ = 2393837122697 is a prime.

It is a super-3 number, since 3×2393837123209³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2393837123809) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 898923612 + ... + 898926274.

Almost surely, 2^{2393837123209} is an apocalyptic number.

2393837123209 is the 1547203-rd square number.

2393837123209 is the 773602-nd centered octagonal number.

It is an amenable number.

2393837123209 is a deficient number, since it is larger than the sum of its proper divisors (425843819204).

2393837123209 is an frugal number, since it uses more digits than its factorization.

2393837123209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506 (or 2753 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 2393837123209 in words is "two trillion, three hundred ninety-three billion, eight hundred thirty-seven million, one hundred twenty-three thousand, two hundred nine".