1877618666349 has 64 divisors (see below), whose sum is σ = 2949343488000. Its totient is φ = 1177262916480.

The previous prime is 1877618666327. The next prime is 1877618666351. The reversal of 1877618666349 is 9436668167781.

It is a happy number.

It is not a de Polignac number, because 1877618666349 - 2¹⁷ = 1877618535277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1877618646349) 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 63 ways as a sum of consecutive naturals, for example, 69294294 + ... + 69321384.

It is an arithmetic number, because the mean of its divisors is an integer number (46083492000).

Almost surely, 2^{1877618666349} is an apocalyptic number.

1877618666349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1877618666349 is a deficient number, since it is larger than the sum of its proper divisors (1071724821651).

1877618666349 is a wasteful number, since it uses less digits than its factorization.

1877618666349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28095 (or 28089 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 72.

The spelling of 1877618666349 in words is "one trillion, eight hundred seventy-seven billion, six hundred eighteen million, six hundred sixty-six thousand, three hundred forty-nine".