1634947066 has 4 divisors (see below), whose sum is σ = 2452420602. Its totient is φ = 817473532.

The previous prime is 1634947063. The next prime is 1634947081. The reversal of 1634947066 is 6607494361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1588421025 + 46526041 = 39855^2 + 6821^2 .

It is not an unprimeable number, because it can be changed into a prime (1634947063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408736765 + ... + 408736768.

Almost surely, 2^1634947066 is an apocalyptic number.

1634947066 is a deficient number, since it is larger than the sum of its proper divisors (817473536).

1634947066 is an equidigital number, since it uses as much as digits as its factorization.

1634947066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817473535.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 1634947066 is about 40434.4786784744. The cubic root of 1634947066 is about 1178.0613253712.

The spelling of 1634947066 in words is "one billion, six hundred thirty-four million, nine hundred forty-seven thousand, sixty-six".