1890838106477 has 4 divisors (see below), whose sum is σ = 1936956109116. Its totient is φ = 1844720103840.

The previous prime is 1890838106453. The next prime is 1890838106489. The reversal of 1890838106477 is 7746018380981.

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

It can be written as a sum of positive squares in 2 ways, for example, as 554569153636 + 1336268952841 = 744694^2 + 1155971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1890838106477 - 2¹⁴ = 1890838090093 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 (1890838106497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23059001258 + ... + 23059001339.

It is an arithmetic number, because the mean of its divisors is an integer number (484239027279).

Almost surely, 2^{1890838106477} is an apocalyptic number.

It is an amenable number.

1890838106477 is a deficient number, since it is larger than the sum of its proper divisors (46118002639).

1890838106477 is an equidigital number, since it uses as much as digits as its factorization.

1890838106477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46118002638.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 1890838106477 in words is "one trillion, eight hundred ninety billion, eight hundred thirty-eight million, one hundred six thousand, four hundred seventy-seven".