1649028941 has 4 divisors (see below), whose sum is σ = 1884604512. Its totient is φ = 1413453372.

The previous prime is 1649028929. The next prime is 1649028947. The reversal of 1649028941 is 1498209461.

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 1649028941 - 2¹⁸ = 1648766797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1649028892 and 1649028901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649028947) 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, 117787775 + ... + 117787788.

It is an arithmetic number, because the mean of its divisors is an integer number (471151128).

Almost surely, 2^1649028941 is an apocalyptic number.

It is an amenable number.

1649028941 is a deficient number, since it is larger than the sum of its proper divisors (235575571).

1649028941 is an equidigital number, since it uses as much as digits as its factorization.

1649028941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235575570.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1649028941 is about 40608.2373540148. The cubic root of 1649028941 is about 1181.4338934295.

The spelling of 1649028941 in words is "one billion, six hundred forty-nine million, twenty-eight thousand, nine hundred forty-one".