1249849853 has 8 divisors (see below), whose sum is σ = 1433959872. Its totient is φ = 1067129856.

The previous prime is 1249849841. The next prime is 1249849871. The reversal of 1249849853 is 3589489421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1249849853 - 2⁶ = 1249849789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1249849795 and 1249849804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249849823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345575 + ... + 349172.

It is an arithmetic number, because the mean of its divisors is an integer number (179244984).

Almost surely, 2^1249849853 is an apocalyptic number.

It is an amenable number.

1249849853 is a deficient number, since it is larger than the sum of its proper divisors (184110019).

1249849853 is an equidigital number, since it uses as much as digits as its factorization.

1249849853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695011.

The product of its digits is 2488320, while the sum is 53.

The square root of 1249849853 is about 35353.2155963216. The cubic root of 1249849853 is about 1077.1742123682.

The spelling of 1249849853 in words is "one billion, two hundred forty-nine million, eight hundred forty-nine thousand, eight hundred fifty-three".