1821090095 has 16 divisors (see below), whose sum is σ = 2407583520. Its totient is φ = 1311312000.

The previous prime is 1821090041. The next prime is 1821090097. The reversal of 1821090095 is 5900901281.

It is not a de Polignac number, because 1821090095 - 2⁸ = 1821089839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821090097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158360 + ... + 169469.

It is an arithmetic number, because the mean of its divisors is an integer number (150473970).

Almost surely, 2^1821090095 is an apocalyptic number.

1821090095 is a deficient number, since it is larger than the sum of its proper divisors (586493425).

1821090095 is a wasteful number, since it uses less digits than its factorization.

1821090095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327946.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1821090095 is about 42674.2322133627. The cubic root of 1821090095 is about 1221.1728609425.

The spelling of 1821090095 in words is "one billion, eight hundred twenty-one million, ninety thousand, ninety-five".