1630564349 has 4 divisors (see below), whose sum is σ = 1644994236. Its totient is φ = 1616134464.

The previous prime is 1630564339. The next prime is 1630564393. The reversal of 1630564349 is 9434650361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45091225 + 1585473124 = 6715^2 + 39818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1630564349 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 (1630564339) 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, 7214774 + ... + 7214999.

It is an arithmetic number, because the mean of its divisors is an integer number (411248559).

Almost surely, 2^1630564349 is an apocalyptic number.

It is an amenable number.

1630564349 is a deficient number, since it is larger than the sum of its proper divisors (14429887).

1630564349 is a wasteful number, since it uses less digits than its factorization.

1630564349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14429886.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 1630564349 is about 40380.2470150939. The cubic root of 1630564349 is about 1177.0077275962.

The spelling of 1630564349 in words is "one billion, six hundred thirty million, five hundred sixty-four thousand, three hundred forty-nine".