1684264427 has 2 divisors, whose sum is σ = 1684264428. Its totient is φ = 1684264426.

The previous prime is 1684264397. The next prime is 1684264451. The reversal of 1684264427 is 7244624861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1684264427 - 2⁶ = 1684264363 is a prime.

It is a super-3 number, since 3×1684264427³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1684264727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842132213 + 842132214.

It is an arithmetic number, because the mean of its divisors is an integer number (842132214).

Almost surely, 2^1684264427 is an apocalyptic number.

1684264427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684264427 is an equidigital number, since it uses as much as digits as its factorization.

1684264427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 44.

The square root of 1684264427 is about 41039.7907767571. The cubic root of 1684264427 is about 1189.7893907345.

The spelling of 1684264427 in words is "one billion, six hundred eighty-four million, two hundred sixty-four thousand, four hundred twenty-seven".