2638499457 has 16 divisors (see below), whose sum is σ = 3875820480. Its totient is φ = 1583256000.

The previous prime is 2638499449. The next prime is 2638499459. The reversal of 2638499457 is 7549948362.

It is not a de Polignac number, because 2638499457 - 2³ = 2638499449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2638499397 and 2638499406.

It is not an unprimeable number, because it can be changed into a prime (2638499459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392482 + ... + 399147.

It is an arithmetic number, because the mean of its divisors is an integer number (242238780).

Almost surely, 2^2638499457 is an apocalyptic number.

It is an amenable number.

2638499457 is a deficient number, since it is larger than the sum of its proper divisors (1237321023).

2638499457 is a wasteful number, since it uses less digits than its factorization.

2638499457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791744.

The product of its digits is 13063680, while the sum is 57.

The square root of 2638499457 is about 51366.3260998877. The cubic root of 2638499457 is about 1381.8227431630.

It can be divided in two parts, 26 and 38499457, that added together give a palindrome (38499483).

The spelling of 2638499457 in words is "two billion, six hundred thirty-eight million, four hundred ninety-nine thousand, four hundred fifty-seven".