2183629799521 has 3 divisors (see below), whose sum is σ = 2183631277233. Its totient is φ = 2183628321810.

The previous prime is 2183629799479. The next prime is 2183629799537. The reversal of 2183629799521 is 1259979263812.

It is a happy number.

The square root of 2183629799521 is 1477711.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2183629799521 - 2¹⁷ = 2183629668449 is a prime.

It is a super-2 number, since 2×2183629799521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2183629799551) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 738856 + ... + 2216566.

It is an arithmetic number, because the mean of its divisors is an integer number (727877092411).

Almost surely, 2^{2183629799521} is an apocalyptic number.

2183629799521 is the 1477711-st square number.

2183629799521 is the 738856-th centered octagonal number.

It is an amenable number.

2183629799521 is a deficient number, since it is larger than the sum of its proper divisors (1477712).

2183629799521 is an frugal number, since it uses more digits than its factorization.

2183629799521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955422 (or 1477711 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

Multiplying 2183629799521 by its sum of digits (64), we get a square (139752307169344 = 11821688²).

The spelling of 2183629799521 in words is "two trillion, one hundred eighty-three billion, six hundred twenty-nine million, seven hundred ninety-nine thousand, five hundred twenty-one".