2538919 has 2 divisors, whose sum is σ = 2538920. Its totient is φ = 2538918.

The previous prime is 2538917. The next prime is 2538953. The reversal of 2538919 is 9198352.

2538919 = 648² + 649² + ... + 653².

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2538919 - 2¹ = 2538917 is a prime.

It is a super-2 number, since 2×2538919² = 12892219377122, which contains 22 as substring.

Together with 2538917, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2538917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269459 + 1269460.

It is an arithmetic number, because the mean of its divisors is an integer number (1269460).

2^2538919 is an apocalyptic number.

2538919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538919 is an equidigital number, since it uses as much as digits as its factorization.

2538919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 2538919 is about 1593.3985690969. The cubic root of 2538919 is about 136.4215402439.

The spelling of 2538919 in words is "two million, five hundred thirty-eight thousand, nine hundred nineteen".