1914345557 has 2 divisors, whose sum is σ = 1914345558. Its totient is φ = 1914345556.

The previous prime is 1914345497. The next prime is 1914345569. The reversal of 1914345557 is 7555434191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1740474961 + 173870596 = 41719^2 + 13186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1914345557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1914345757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957172778 + 957172779.

It is an arithmetic number, because the mean of its divisors is an integer number (957172779).

Almost surely, 2^1914345557 is an apocalyptic number.

It is an amenable number.

1914345557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1914345557 is an equidigital number, since it uses as much as digits as its factorization.

1914345557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The square root of 1914345557 is about 43753.2348175538. The cubic root of 1914345557 is about 1241.6716867526.

The spelling of 1914345557 in words is "one billion, nine hundred fourteen million, three hundred forty-five thousand, five hundred fifty-seven".