1820268395 has 16 divisors (see below), whose sum is σ = 2418467328. Its totient is φ = 1304070240.

The previous prime is 1820268367. The next prime is 1820268403. The reversal of 1820268395 is 5938620281.

It is not a de Polignac number, because 1820268395 - 2²⁰ = 1819219819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243299 + ... + 250668.

It is an arithmetic number, because the mean of its divisors is an integer number (151154208).

Almost surely, 2^1820268395 is an apocalyptic number.

1820268395 is a deficient number, since it is larger than the sum of its proper divisors (598198933).

1820268395 is a wasteful number, since it uses less digits than its factorization.

1820268395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494050.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1820268395 is about 42664.6035373587. The cubic root of 1820268395 is about 1220.9891635146.

The spelling of 1820268395 in words is "one billion, eight hundred twenty million, two hundred sixty-eight thousand, three hundred ninety-five".