1890080677 has 4 divisors (see below), whose sum is σ = 1893164620. Its totient is φ = 1886996736.

The previous prime is 1890080671. The next prime is 1890080711. The reversal of 1890080677 is 7760800981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7760800981 = 109 ⋅71200009.

It can be written as a sum of positive squares in 2 ways, for example, as 3568321 + 1886512356 = 1889^2 + 43434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1890080677 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 (1890080671) 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, 1541052 + ... + 1542277.

It is an arithmetic number, because the mean of its divisors is an integer number (473291155).

Almost surely, 2^1890080677 is an apocalyptic number.

It is an amenable number.

1890080677 is a deficient number, since it is larger than the sum of its proper divisors (3083943).

1890080677 is an equidigital number, since it uses as much as digits as its factorization.

1890080677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083942.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 1890080677 is about 43475.0581023189. The cubic root of 1890080677 is about 1236.4031819110.

The spelling of 1890080677 in words is "one billion, eight hundred ninety million, eighty thousand, six hundred seventy-seven".