1890710137 has 2 divisors, whose sum is σ = 1890710138. Its totient is φ = 1890710136.

The previous prime is 1890710123. The next prime is 1890710141. The reversal of 1890710137 is 7310170981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1388233081 + 502477056 = 37259^2 + 22416^2 .

It is an emirp because it is prime and its reverse (7310170981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1890710137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1890710096 and 1890710105.

It is not a weakly prime, because it can be changed into another prime (1890710167) 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 as a sum of consecutive naturals, namely, 945355068 + 945355069.

It is an arithmetic number, because the mean of its divisors is an integer number (945355069).

Almost surely, 2^1890710137 is an apocalyptic number.

It is an amenable number.

1890710137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890710137 is an equidigital number, since it uses as much as digits as its factorization.

1890710137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 1890710137 is about 43482.2968229600. The cubic root of 1890710137 is about 1236.5404211968.

The spelling of 1890710137 in words is "one billion, eight hundred ninety million, seven hundred ten thousand, one hundred thirty-seven".