1649588965 has 16 divisors (see below), whose sum is σ = 2131479360. Its totient is φ = 1220988160.

The previous prime is 1649588947. The next prime is 1649589001. The reversal of 1649588965 is 5698859461.

It is not a de Polignac number, because 1649588965 - 2⁹ = 1649588453 is a prime.

It is a super-2 number, since 2×1649588965² = 5442287506899542450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159451 + ... + 169480.

It is an arithmetic number, because the mean of its divisors is an integer number (133217460).

Almost surely, 2^1649588965 is an apocalyptic number.

It is an amenable number.

1649588965 is a deficient number, since it is larger than the sum of its proper divisors (481890395).

1649588965 is a wasteful number, since it uses less digits than its factorization.

1649588965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329012.

The product of its digits is 18662400, while the sum is 61.

The square root of 1649588965 is about 40615.1322169459. The cubic root of 1649588965 is about 1181.5676198980.

The spelling of 1649588965 in words is "one billion, six hundred forty-nine million, five hundred eighty-eight thousand, nine hundred sixty-five".