1145236613 has 4 divisors (see below), whose sum is σ = 1145494560. Its totient is φ = 1144978668.

The previous prime is 1145236607. The next prime is 1145236621. The reversal of 1145236613 is 3166325411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145236613 - 2⁶ = 1145236549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145236613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145236633) 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, 122195 + ... + 131232.

It is an arithmetic number, because the mean of its divisors is an integer number (286373640).

Almost surely, 2^1145236613 is an apocalyptic number.

It is an amenable number.

1145236613 is a deficient number, since it is larger than the sum of its proper divisors (257947).

1145236613 is an equidigital number, since it uses as much as digits as its factorization.

1145236613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257946.

The product of its digits is 12960, while the sum is 32.

The square root of 1145236613 is about 33841.3447280098. The cubic root of 1145236613 is about 1046.2410148788.

The spelling of 1145236613 in words is "one billion, one hundred forty-five million, two hundred thirty-six thousand, six hundred thirteen".