1630213049 has 4 divisors (see below), whose sum is σ = 1632285264. Its totient is φ = 1628140836.

The previous prime is 1630212967. The next prime is 1630213051. The reversal of 1630213049 is 9403120361.

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.

It is a cyclic number.

It is not a de Polignac number, because 1630213049 - 2¹² = 1630208953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630213069) 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, 1034927 + ... + 1036500.

It is an arithmetic number, because the mean of its divisors is an integer number (408071316).

Almost surely, 2^1630213049 is an apocalyptic number.

It is an amenable number.

1630213049 is a deficient number, since it is larger than the sum of its proper divisors (2072215).

1630213049 is an equidigital number, since it uses as much as digits as its factorization.

1630213049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072214.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1630213049 is about 40375.8968816793. The cubic root of 1630213049 is about 1176.9231939779.

The spelling of 1630213049 in words is "one billion, six hundred thirty million, two hundred thirteen thousand, forty-nine".