1145003263 has 4 divisors (see below), whose sum is σ = 1147201488. Its totient is φ = 1142805040.

The previous prime is 1145003257. The next prime is 1145003281. The reversal of 1145003263 is 3623005411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3623005411 = 36373 ⋅99607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145003263 is a prime.

It is a super-2 number, since 2×1145003263² = 2622064944561294338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145003243) 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, 1098331 + ... + 1099372.

It is an arithmetic number, because the mean of its divisors is an integer number (286800372).

Almost surely, 2^1145003263 is an apocalyptic number.

1145003263 is a deficient number, since it is larger than the sum of its proper divisors (2198225).

1145003263 is an equidigital number, since it uses as much as digits as its factorization.

1145003263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198224.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1145003263 is about 33837.8968465831. The cubic root of 1145003263 is about 1046.1699504013.

Adding to 1145003263 its reverse (3623005411), we get a palindrome (4768008674).

The spelling of 1145003263 in words is "one billion, one hundred forty-five million, three thousand, two hundred sixty-three".