1609464667 has 2 divisors, whose sum is σ = 1609464668. Its totient is φ = 1609464666.

The previous prime is 1609464601. The next prime is 1609464677. The reversal of 1609464667 is 7664649061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1609464667 - 2¹⁵ = 1609431899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1609464667.

It is not a weakly prime, because it can be changed into another prime (1609464677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804732333 + 804732334.

It is an arithmetic number, because the mean of its divisors is an integer number (804732334).

Almost surely, 2^1609464667 is an apocalyptic number.

1609464667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609464667 is an equidigital number, since it uses as much as digits as its factorization.

1609464667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 1609464667 is about 40118.1338922936. The cubic root of 1609464667 is about 1171.9088005677.

The spelling of 1609464667 in words is "one billion, six hundred nine million, four hundred sixty-four thousand, six hundred sixty-seven".