1914137789 has 2 divisors, whose sum is σ = 1914137790. Its totient is φ = 1914137788.

The previous prime is 1914137747. The next prime is 1914137803. The reversal of 1914137789 is 9877314191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1912575289 + 1562500 = 43733^2 + 1250^2 .

It is an emirp because it is prime and its reverse (9877314191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1914137789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1914137189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957068894 + 957068895.

It is an arithmetic number, because the mean of its divisors is an integer number (957068895).

Almost surely, 2^1914137789 is an apocalyptic number.

It is an amenable number.

1914137789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1914137789 is an equidigital number, since it uses as much as digits as its factorization.

1914137789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 50.

The square root of 1914137789 is about 43750.8604372531. The cubic root of 1914137789 is about 1241.6267647032.

The spelling of 1914137789 in words is "one billion, nine hundred fourteen million, one hundred thirty-seven thousand, seven hundred eighty-nine".