1045129993 has 4 divisors (see below), whose sum is σ = 1046268160. Its totient is φ = 1043991828.

The previous prime is 1045129973. The next prime is 1045130027. The reversal of 1045129993 is 3999215401.

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 a de Polignac number, because none of the positive numbers 2^k-1045129993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045129963) 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, 567705 + ... + 569542.

It is an arithmetic number, because the mean of its divisors is an integer number (261567040).

Almost surely, 2^1045129993 is an apocalyptic number.

It is an amenable number.

1045129993 is a deficient number, since it is larger than the sum of its proper divisors (1138167).

1045129993 is an equidigital number, since it uses as much as digits as its factorization.

1045129993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138166.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 1045129993 is about 32328.4703164254. The cubic root of 1045129993 is about 1014.8225378307.

The spelling of 1045129993 in words is "one billion, forty-five million, one hundred twenty-nine thousand, nine hundred ninety-three".