1820763223 has 4 divisors (see below), whose sum is σ = 1927866960. Its totient is φ = 1713659488.

The previous prime is 1820763209. The next prime is 1820763271. The reversal of 1820763223 is 3223670281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1820763223 - 2¹³ = 1820755031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820763023) 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, 53551843 + ... + 53551876.

It is an arithmetic number, because the mean of its divisors is an integer number (481966740).

Almost surely, 2^1820763223 is an apocalyptic number.

1820763223 is a deficient number, since it is larger than the sum of its proper divisors (107103737).

1820763223 is a wasteful number, since it uses less digits than its factorization.

1820763223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107103736.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1820763223 is about 42670.4021893396. The cubic root of 1820763223 is about 1221.0997927838.

The spelling of 1820763223 in words is "one billion, eight hundred twenty million, seven hundred sixty-three thousand, two hundred twenty-three".