1630349 has 4 divisors (see below), whose sum is σ = 1863264. Its totient is φ = 1397436.

The previous prime is 1630303. The next prime is 1630357. The reversal of 1630349 is 9430361.

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 1630349 - 2⁸ = 1630093 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630379) 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, 116447 + ... + 116460.

It is an arithmetic number, because the mean of its divisors is an integer number (465816).

2^1630349 is an apocalyptic number.

It is an amenable number.

1630349 is a deficient number, since it is larger than the sum of its proper divisors (232915).

1630349 is an equidigital number, since it uses as much as digits as its factorization.

1630349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232914.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1630349 is about 1276.8512051136. The cubic root of 1630349 is about 117.6955909423.

It can be divided in two parts, 16 and 30349, that multiplied together give a palindrome (485584).

The spelling of 1630349 in words is "one million, six hundred thirty thousand, three hundred forty-nine".