9145257969 has 8 divisors (see below), whose sum is σ = 12210452800. Its totient is φ = 6088450896.

The previous prime is 9145257937. The next prime is 9145257971. The reversal of 9145257969 is 9697525419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9145257969 - 2⁵ = 9145257937 is a prime.

It is a super-2 number, since 2×9145257969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9145256969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094394 + ... + 2098755.

It is an arithmetic number, because the mean of its divisors is an integer number (1526306600).

Almost surely, 2^9145257969 is an apocalyptic number.

It is an amenable number.

9145257969 is a deficient number, since it is larger than the sum of its proper divisors (3065194831).

9145257969 is a wasteful number, since it uses less digits than its factorization.

9145257969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193879.

The product of its digits is 6123600, while the sum is 57.

The square root of 9145257969 is about 95630.8421431078. The cubic root of 9145257969 is about 2091.2148465476.

The spelling of 9145257969 in words is "nine billion, one hundred forty-five million, two hundred fifty-seven thousand, nine hundred sixty-nine".