1145250993 has 4 divisors (see below), whose sum is σ = 1527001328. Its totient is φ = 763500660.

The previous prime is 1145250989. The next prime is 1145251001. The reversal of 1145250993 is 3990525411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3990525411 = 3 ⋅1330175137.

It is not a de Polignac number, because 1145250993 - 2² = 1145250989 is a prime.

It is a super-3 number, since 3×1145250993³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145250193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190875163 + ... + 190875168.

It is an arithmetic number, because the mean of its divisors is an integer number (381750332).

Almost surely, 2^1145250993 is an apocalyptic number.

It is an amenable number.

1145250993 is a deficient number, since it is larger than the sum of its proper divisors (381750335).

1145250993 is an equidigital number, since it uses as much as digits as its factorization.

1145250993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381750334.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 1145250993 is about 33841.5571893493. The cubic root of 1145250993 is about 1046.2453938524.

The spelling of 1145250993 in words is "one billion, one hundred forty-five million, two hundred fifty thousand, nine hundred ninety-three".