2639373243 has 16 divisors (see below), whose sum is σ = 3814976256. Its totient is φ = 1613469600.

The previous prime is 2639373227. The next prime is 2639373251. The reversal of 2639373243 is 3423739362.

It is a happy number.

It is not a de Polignac number, because 2639373243 - 2⁴ = 2639373227 is a prime.

It is a super-2 number, since 2×2639373243² = 13932582231728674098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2639373195 and 2639373204.

It is not an unprimeable number, because it can be changed into a prime (2639373223) 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, 218205 + ... + 229982.

It is an arithmetic number, because the mean of its divisors is an integer number (238436016).

Almost surely, 2^2639373243 is an apocalyptic number.

2639373243 is a deficient number, since it is larger than the sum of its proper divisors (1175603013).

2639373243 is a wasteful number, since it uses less digits than its factorization.

2639373243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448354.

The product of its digits is 489888, while the sum is 42.

The square root of 2639373243 is about 51374.8308318383. The cubic root of 2639373243 is about 1381.9752647162.

The spelling of 2639373243 in words is "two billion, six hundred thirty-nine million, three hundred seventy-three thousand, two hundred forty-three".