1649704704 has 36 divisors (see below), whose sum is σ = 4390622376. Its totient is φ = 549901312.

The previous prime is 1649704687. The next prime is 1649704729. The reversal of 1649704704 is 4074079461.

It is a super-2 number, since 2×1649704704² = 5443051220799455232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073259 + ... + 1074794.

Almost surely, 2^1649704704 is an apocalyptic number.

It is an amenable number.

1649704704 is an abundant number, since it is smaller than the sum of its proper divisors (2740917672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649704704 is an equidigital number, since it uses as much as digits as its factorization.

1649704704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148072 (or 2148058 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 1649704704 is about 40616.5570180438. The cubic root of 1649704704 is about 1181.5952530962.

The spelling of 1649704704 in words is "one billion, six hundred forty-nine million, seven hundred four thousand, seven hundred four".