1834737780557 has 4 divisors (see below), whose sum is σ = 2001532124256. Its totient is φ = 1667943436860.

The previous prime is 1834737780541. The next prime is 1834737780599. The reversal of 1834737780557 is 7550877374381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1834737780557 - 2⁴ = 1834737780541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1834737780493 and 1834737780502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1834737780157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83397171833 + ... + 83397171854.

It is an arithmetic number, because the mean of its divisors is an integer number (500383031064).

Almost surely, 2^{1834737780557} is an apocalyptic number.

It is an amenable number.

1834737780557 is a deficient number, since it is larger than the sum of its proper divisors (166794343699).

1834737780557 is a wasteful number, since it uses less digits than its factorization.

1834737780557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166794343698.

The product of its (nonzero) digits is 138297600, while the sum is 65.

The spelling of 1834737780557 in words is "one trillion, eight hundred thirty-four billion, seven hundred thirty-seven million, seven hundred eighty thousand, five hundred fifty-seven".