1977226900183 has 4 divisors (see below), whose sum is σ = 1977233791968. Its totient is φ = 1977220008400.

The previous prime is 1977226900171. The next prime is 1977226900217. The reversal of 1977226900183 is 3810096227791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1977226900183 - 2⁹ = 1977226899671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977226900133) 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, 2995966 + ... + 3595867.

It is an arithmetic number, because the mean of its divisors is an integer number (494308447992).

Almost surely, 2^{1977226900183} is an apocalyptic number.

1977226900183 is a deficient number, since it is larger than the sum of its proper divisors (6891785).

1977226900183 is an equidigital number, since it uses as much as digits as its factorization.

1977226900183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6891784.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 1977226900183 in words is "one trillion, nine hundred seventy-seven billion, two hundred twenty-six million, nine hundred thousand, one hundred eighty-three".