1649581096 has 16 divisors (see below), whose sum is σ = 3094112340. Its totient is φ = 824484480.

The previous prime is 1649581081. The next prime is 1649581097. The reversal of 1649581096 is 6901859461.

It can be written as a sum of positive squares in 2 ways, for example, as 1649496996 + 84100 = 40614^2 + 290^2 .

It is a super-2 number, since 2×1649581096² = 5442235584561122432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1649581097) 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, 14485 + ... + 59236.

Almost surely, 2^1649581096 is an apocalyptic number.

It is an amenable number.

1649581096 is a deficient number, since it is larger than the sum of its proper divisors (1444531244).

1649581096 is a wasteful number, since it uses less digits than its factorization.

1649581096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76524 (or 76520 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1649581096 is about 40615.0353440693. The cubic root of 1649581096 is about 1181.5657410925.

The spelling of 1649581096 in words is "one billion, six hundred forty-nine million, five hundred eighty-one thousand, ninety-six".