1916330497 has 2 divisors, whose sum is σ = 1916330498. Its totient is φ = 1916330496.

The previous prime is 1916330489. The next prime is 1916330509. The reversal of 1916330497 is 7940336191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1838608641 + 77721856 = 42879^2 + 8816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916330497 - 2³ = 1916330489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916330197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958165248 + 958165249.

It is an arithmetic number, because the mean of its divisors is an integer number (958165249).

Almost surely, 2^1916330497 is an apocalyptic number.

It is an amenable number.

1916330497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916330497 is an equidigital number, since it uses as much as digits as its factorization.

1916330497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 1916330497 is about 43775.9122920357. The cubic root of 1916330497 is about 1242.1006919263.

The spelling of 1916330497 in words is "one billion, nine hundred sixteen million, three hundred thirty thousand, four hundred ninety-seven".