1253922817 has 4 divisors (see below), whose sum is σ = 1433054656. Its totient is φ = 1074790980.

The previous prime is 1253922799. The next prime is 1253922827. The reversal of 1253922817 is 7182293521.

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 1253922817 - 2²³ = 1245534209 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 1253922817.

It is not an unprimeable number, because it can be changed into a prime (1253922827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89565909 + ... + 89565922.

It is an arithmetic number, because the mean of its divisors is an integer number (358263664).

Almost surely, 2^1253922817 is an apocalyptic number.

It is an amenable number.

1253922817 is a deficient number, since it is larger than the sum of its proper divisors (179131839).

1253922817 is an equidigital number, since it uses as much as digits as its factorization.

1253922817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179131838.

The product of its digits is 60480, while the sum is 40.

The square root of 1253922817 is about 35410.7726122998. The cubic root of 1253922817 is about 1078.3430286793.

The spelling of 1253922817 in words is "one billion, two hundred fifty-three million, nine hundred twenty-two thousand, eight hundred seventeen".