1248499857 has 16 divisors (see below), whose sum is σ = 1817314560. Its totient is φ = 756118800.

The previous prime is 1248499829. The next prime is 1248499877. The reversal of 1248499857 is 7589948421.

It is not a de Polignac number, because 1248499857 - 2⁷ = 1248499729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1248499797 and 1248499806.

It is not an unprimeable number, because it can be changed into a prime (1248499877) 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, 35182 + ... + 61112.

It is an arithmetic number, because the mean of its divisors is an integer number (113582160).

Almost surely, 2^1248499857 is an apocalyptic number.

It is an amenable number.

1248499857 is a deficient number, since it is larger than the sum of its proper divisors (568814703).

1248499857 is a wasteful number, since it uses less digits than its factorization.

1248499857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27404.

The product of its digits is 5806080, while the sum is 57.

The square root of 1248499857 is about 35334.1174645696. The cubic root of 1248499857 is about 1076.7862444974.

It can be divided in two parts, 1248 and 499857, that added together give a palindrome (501105).

The spelling of 1248499857 in words is "one billion, two hundred forty-eight million, four hundred ninety-nine thousand, eight hundred fifty-seven".