814193641 has 8 divisors (see below), whose sum is σ = 841094144. Its totient is φ = 787332960.

The previous prime is 814193599. The next prime is 814193651. The reversal of 814193641 is 146391418.

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 814193641 - 2¹⁵ = 814160873 is a prime.

It is a super-2 number, since 2×814193641² = 1325822570089673762, which contains 22 as substring.

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 814193641.

It is not an unprimeable number, because it can be changed into a prime (814193651) 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, 34885 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (105136768).

Almost surely, 2^814193641 is an apocalyptic number.

It is an amenable number.

814193641 is a deficient number, since it is larger than the sum of its proper divisors (26900503).

814193641 is a wasteful number, since it uses less digits than its factorization.

814193641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19911.

The product of its digits is 20736, while the sum is 37.

The square root of 814193641 is about 28534.0785903453. The cubic root of 814193641 is about 933.7757016797.

The spelling of 814193641 in words is "eight hundred fourteen million, one hundred ninety-three thousand, six hundred forty-one".