2538717949 has 4 divisors (see below), whose sum is σ = 2539142464. Its totient is φ = 2538293436.

The previous prime is 2538717917. The next prime is 2538717977. The reversal of 2538717949 is 9497178352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2538717949 - 2⁵ = 2538717917 is a prime.

It is a super-3 number, since 3×2538717949³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2538717949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538717749) 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, 203157 + ... + 215290.

It is an arithmetic number, because the mean of its divisors is an integer number (634785616).

Almost surely, 2^2538717949 is an apocalyptic number.

It is an amenable number.

2538717949 is a deficient number, since it is larger than the sum of its proper divisors (424515).

2538717949 is an equidigital number, since it uses as much as digits as its factorization.

2538717949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424514.

The product of its digits is 3810240, while the sum is 55.

The square root of 2538717949 is about 50385.6919075247. The cubic root of 2538717949 is about 1364.1793918231.

The spelling of 2538717949 in words is "two billion, five hundred thirty-eight million, seven hundred seventeen thousand, nine hundred forty-nine".