1649226028 has 6 divisors (see below), whose sum is σ = 2886145556. Its totient is φ = 824613012.

The previous prime is 1649226023. The next prime is 1649226031. The reversal of 1649226028 is 8206229461.

It is not an unprimeable number, because it can be changed into a prime (1649226023) by changing a digit.

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 as a sum of consecutive naturals, namely, 206153250 + ... + 206153257.

Almost surely, 2^1649226028 is an apocalyptic number.

It is an amenable number.

1649226028 is a deficient number, since it is larger than the sum of its proper divisors (1236919528).

1649226028 is a wasteful number, since it uses less digits than its factorization.

1649226028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412306511 (or 412306509 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1649226028 is about 40610.6639689626. The cubic root of 1649226028 is about 1181.4809587013.

The spelling of 1649226028 in words is "one billion, six hundred forty-nine million, two hundred twenty-six thousand, twenty-eight".