1873808557557 has 16 divisors (see below), whose sum is σ = 2576644055040. Its totient is φ = 1210546883952.

The previous prime is 1873808557553. The next prime is 1873808557609. The reversal of 1873808557557 is 7557558083781.

It is not a de Polignac number, because 1873808557557 - 2² = 1873808557553 is a prime.

It is a super-2 number, since 2×1873808557557² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1873808557491 and 1873808557500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1873808557553) 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, 57171207 + ... + 57203972.

It is an arithmetic number, because the mean of its divisors is an integer number (161040253440).

Almost surely, 2^{1873808557557} is an apocalyptic number.

It is an amenable number.

1873808557557 is a deficient number, since it is larger than the sum of its proper divisors (702835497483).

1873808557557 is a wasteful number, since it uses less digits than its factorization.

1873808557557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114375352.

The product of its (nonzero) digits is 329280000, while the sum is 69.

The spelling of 1873808557557 in words is "one trillion, eight hundred seventy-three billion, eight hundred eight million, five hundred fifty-seven thousand, five hundred fifty-seven".