1829890655 has 4 divisors (see below), whose sum is σ = 2195868792. Its totient is φ = 1463912520.

The previous prime is 1829890637. The next prime is 1829890679. The reversal of 1829890655 is 5560989281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5560989281 = 31 ⋅179386751.

It is a de Polignac number, because none of the positive numbers 2^k-1829890655 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1829890597 and 1829890606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182989061 + ... + 182989070.

It is an arithmetic number, because the mean of its divisors is an integer number (548967198).

Almost surely, 2^1829890655 is an apocalyptic number.

1829890655 is a deficient number, since it is larger than the sum of its proper divisors (365978137).

1829890655 is an equidigital number, since it uses as much as digits as its factorization.

1829890655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365978136.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The square root of 1829890655 is about 42777.2212164371. The cubic root of 1829890655 is about 1223.1368383569.

The spelling of 1829890655 in words is "one billion, eight hundred twenty-nine million, eight hundred ninety thousand, six hundred fifty-five".