1649996026 has 32 divisors (see below), whose sum is σ = 2859316992. Its totient is φ = 699494400.

The previous prime is 1649996017. The next prime is 1649996027. The reversal of 1649996026 is 6206999461.

It is not an unprimeable number, because it can be changed into a prime (1649996027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541780 + ... + 544816.

It is an arithmetic number, because the mean of its divisors is an integer number (89353656).

Almost surely, 2^1649996026 is an apocalyptic number.

1649996026 is a deficient number, since it is larger than the sum of its proper divisors (1209320966).

1649996026 is a wasteful number, since it uses less digits than its factorization.

1649996026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 1649996026 is about 40620.1431065918. The cubic root of 1649996026 is about 1181.6648017921.

The spelling of 1649996026 in words is "one billion, six hundred forty-nine million, nine hundred ninety-six thousand, twenty-six".