1906125719 has 2 divisors, whose sum is σ = 1906125720. Its totient is φ = 1906125718.

The previous prime is 1906125709. The next prime is 1906125721. The reversal of 1906125719 is 9175216091.

It is a strong prime.

It is an emirp because it is prime and its reverse (9175216091) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906125719 is a prime.

It is a super-2 number, since 2×1906125719² = 7266630513266533922, which contains 22 as substring.

Together with 1906125721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906125709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953062859 + 953062860.

It is an arithmetic number, because the mean of its divisors is an integer number (953062860).

Almost surely, 2^1906125719 is an apocalyptic number.

1906125719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906125719 is an equidigital number, since it uses as much as digits as its factorization.

1906125719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 41.

The square root of 1906125719 is about 43659.1997063620. The cubic root of 1906125719 is about 1239.8919692132.

The spelling of 1906125719 in words is "one billion, nine hundred six million, one hundred twenty-five thousand, seven hundred nineteen".