2155895693 has 8 divisors (see below), whose sum is σ = 2469160512. Its totient is φ = 1843950816.

The previous prime is 2155895671. The next prime is 2155895717. The reversal of 2155895693 is 3965985512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155895693 - 2¹⁰ = 2155894669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155895653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326480 + ... + 333017.

It is an arithmetic number, because the mean of its divisors is an integer number (308645064).

Almost surely, 2^2155895693 is an apocalyptic number.

It is an amenable number.

2155895693 is a deficient number, since it is larger than the sum of its proper divisors (313264819).

2155895693 is an equidigital number, since it uses as much as digits as its factorization.

2155895693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659971.

The product of its digits is 2916000, while the sum is 53.

The square root of 2155895693 is about 46431.6238462538. The cubic root of 2155895693 is about 1291.8415484688.

The spelling of 2155895693 in words is "two billion, one hundred fifty-five million, eight hundred ninety-five thousand, six hundred ninety-three".