1630704773 has 4 divisors (see below), whose sum is σ = 1716531360. Its totient is φ = 1544878188.

The previous prime is 1630704769. The next prime is 1630704793. The reversal of 1630704773 is 3774070361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3774070361 = 6607 ⋅571223.

It is a cyclic number.

It is not a de Polignac number, because 1630704773 - 2² = 1630704769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630704793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42913265 + ... + 42913302.

It is an arithmetic number, because the mean of its divisors is an integer number (429132840).

Almost surely, 2^1630704773 is an apocalyptic number.

It is an amenable number.

1630704773 is a deficient number, since it is larger than the sum of its proper divisors (85826587).

1630704773 is an equidigital number, since it uses as much as digits as its factorization.

1630704773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85826586.

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 1630704773 is about 40381.9857485983. The cubic root of 1630704773 is about 1177.0415145462.

The spelling of 1630704773 in words is "one billion, six hundred thirty million, seven hundred four thousand, seven hundred seventy-three".