1200849253 has 4 divisors (see below), whose sum is σ = 1203154668. Its totient is φ = 1198543840.

The previous prime is 1200849239. The next prime is 1200849269. The reversal of 1200849253 is 3529480021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3529480021 = 463 ⋅7623067.

It can be written as a sum of positive squares in 2 ways, for example, as 662702049 + 538147204 = 25743^2 + 23198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200849253 - 2⁹ = 1200848741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200849203) 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, 1151926 + ... + 1152967.

It is an arithmetic number, because the mean of its divisors is an integer number (300788667).

Almost surely, 2^1200849253 is an apocalyptic number.

It is an amenable number.

1200849253 is a deficient number, since it is larger than the sum of its proper divisors (2305415).

1200849253 is an equidigital number, since it uses as much as digits as its factorization.

1200849253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305414.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1200849253 is about 34653.2718945845. The cubic root of 1200849253 is about 1062.9091950622.

The spelling of 1200849253 in words is "one billion, two hundred million, eight hundred forty-nine thousand, two hundred fifty-three".