1912377539 has 2 divisors, whose sum is σ = 1912377540. Its totient is φ = 1912377538.

The previous prime is 1912377517. The next prime is 1912377541. The reversal of 1912377539 is 9357732191.

It is a strong prime.

It is an emirp because it is prime and its reverse (9357732191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1912377539 is a prime.

Together with 1912377541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1912377493 and 1912377502.

It is not a weakly prime, because it can be changed into another prime (1912377589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956188769 + 956188770.

It is an arithmetic number, because the mean of its divisors is an integer number (956188770).

Almost surely, 2^1912377539 is an apocalyptic number.

1912377539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912377539 is an equidigital number, since it uses as much as digits as its factorization.

1912377539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 47.

The square root of 1912377539 is about 43730.7390630435. The cubic root of 1912377539 is about 1241.2460460629.

The spelling of 1912377539 in words is "one billion, nine hundred twelve million, three hundred seventy-seven thousand, five hundred thirty-nine".