8145341957 has 4 divisors (see below), whose sum is σ = 8344008876. Its totient is φ = 7946675040.

The previous prime is 8145341927. The next prime is 8145341959. The reversal of 8145341957 is 7591435418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2240034241 + 5905307716 = 47329^2 + 76846^2 .

It is a cyclic number.

It is not a de Polignac number, because 8145341957 - 2¹⁰ = 8145340933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145341959) 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, 99333398 + ... + 99333479.

It is an arithmetic number, because the mean of its divisors is an integer number (2086002219).

Almost surely, 2^8145341957 is an apocalyptic number.

It is an amenable number.

8145341957 is a deficient number, since it is larger than the sum of its proper divisors (198666919).

8145341957 is a wasteful number, since it uses less digits than its factorization.

8145341957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198666918.

The product of its digits is 604800, while the sum is 47.

The square root of 8145341957 is about 90251.5482249474. The cubic root of 8145341957 is about 2012.0392130088.

The spelling of 8145341957 in words is "eight billion, one hundred forty-five million, three hundred forty-one thousand, nine hundred fifty-seven".