1203634253 has 16 divisors (see below), whose sum is σ = 1246797552. Its totient is φ = 1161216000.

The previous prime is 1203634231. The next prime is 1203634259. The reversal of 1203634253 is 3524363021.

It can be written as a sum of positive squares in 8 ways, for example, as 359557444 + 844076809 = 18962^2 + 29053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203634253 - 2⁶ = 1203634189 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 (1203634259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1788125 + ... + 1788797.

It is an arithmetic number, because the mean of its divisors is an integer number (77924847).

Almost surely, 2^1203634253 is an apocalyptic number.

It is an amenable number.

1203634253 is a deficient number, since it is larger than the sum of its proper divisors (43163299).

1203634253 is a wasteful number, since it uses less digits than its factorization.

1203634253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1203634253 is about 34693.4324188311. The cubic root of 1203634253 is about 1063.7302574948.

Adding to 1203634253 its reverse (3524363021), we get a palindrome (4727997274).

The spelling of 1203634253 in words is "one billion, two hundred three million, six hundred thirty-four thousand, two hundred fifty-three".