9145913641 has 4 divisors (see below), whose sum is σ = 9149289984. Its totient is φ = 9142537300.

The previous prime is 9145913633. The next prime is 9145913659. The reversal of 9145913641 is 1463195419.

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 9145913641 - 2³ = 9145913633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9145913611) 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, 1684105 + ... + 1689526.

It is an arithmetic number, because the mean of its divisors is an integer number (2287322496).

Almost surely, 2^9145913641 is an apocalyptic number.

It is an amenable number.

9145913641 is a deficient number, since it is larger than the sum of its proper divisors (3376343).

9145913641 is a wasteful number, since it uses less digits than its factorization.

9145913641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376342.

The product of its digits is 116640, while the sum is 43.

The square root of 9145913641 is about 95634.2702225515. The cubic root of 9145913641 is about 2091.2648221109.

The spelling of 9145913641 in words is "nine billion, one hundred forty-five million, nine hundred thirteen thousand, six hundred forty-one".