1670775427 has 2 divisors, whose sum is σ = 1670775428. Its totient is φ = 1670775426.

The previous prime is 1670775401. The next prime is 1670775451. The reversal of 1670775427 is 7245770761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1670775427 - 2²³ = 1662386819 is a prime.

It is a super-3 number, since 3×1670775427³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1670775497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835387713 + 835387714.

It is an arithmetic number, because the mean of its divisors is an integer number (835387714).

Almost surely, 2^1670775427 is an apocalyptic number.

1670775427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670775427 is an equidigital number, since it uses as much as digits as its factorization.

1670775427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576240, while the sum is 46.

The square root of 1670775427 is about 40875.1199019648. The cubic root of 1670775427 is about 1186.6045967706.

The spelling of 1670775427 in words is "one billion, six hundred seventy million, seven hundred seventy-five thousand, four hundred twenty-seven".