1890788341 has 4 divisors (see below), whose sum is σ = 2036233612. Its totient is φ = 1745343072.

The previous prime is 1890788329. The next prime is 1890788353. The reversal of 1890788341 is 1438870981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1438870981 = 26263 ⋅54787.

It is an interprime number because it is at equal distance from previous prime (1890788329) and next prime (1890788353).

It can be written as a sum of positive squares in 2 ways, for example, as 1098591025 + 792197316 = 33145^2 + 28146^2 .

It is a cyclic number.

It is not a de Polignac number, because 1890788341 - 2⁵ = 1890788309 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 (1890788381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72722616 + ... + 72722641.

It is an arithmetic number, because the mean of its divisors is an integer number (509058403).

Almost surely, 2^1890788341 is an apocalyptic number.

It is an amenable number.

1890788341 is a deficient number, since it is larger than the sum of its proper divisors (145445271).

1890788341 is a wasteful number, since it uses less digits than its factorization.

1890788341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145445270.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 1890788341 is about 43483.1960761856. The cubic root of 1890788341 is about 1236.5574696542.

The spelling of 1890788341 in words is "one billion, eight hundred ninety million, seven hundred eighty-eight thousand, three hundred forty-one".