1605270964 has 24 divisors (see below), whose sum is σ = 3072642048. Its totient is φ = 727755840.

The previous prime is 1605270913. The next prime is 1605270971. The reversal of 1605270964 is 4690725061.

It is a super-2 number, since 2×1605270964² = 5153789735722978592, 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 7 ways as a sum of consecutive naturals, for example, 30777 + ... + 64480.

It is an arithmetic number, because the mean of its divisors is an integer number (128026752).

Almost surely, 2^1605270964 is an apocalyptic number.

It is an amenable number.

1605270964 is a deficient number, since it is larger than the sum of its proper divisors (1467371084).

1605270964 is a wasteful number, since it uses less digits than its factorization.

1605270964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95655 (or 95653 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1605270964 is about 40065.8328754064. The cubic root of 1605270964 is about 1170.8900534954.

The spelling of 1605270964 in words is "one billion, six hundred five million, two hundred seventy thousand, nine hundred sixty-four".