1605422631464 has 16 divisors (see below), whose sum is σ = 3010194762900. Its totient is φ = 802704028032.

The previous prime is 1605422631457. The next prime is 1605422631481. The reversal of 1605422631464 is 4641362245061.

It can be written as a sum of positive squares in 2 ways, for example, as 1421173936900 + 184248694564 = 1192130^2 + 429242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89972 + ... + 1794140.

Almost surely, 2^{1605422631464} is an apocalyptic number.

It is an amenable number.

1605422631464 is a deficient number, since it is larger than the sum of its proper divisors (1404772131436).

1605422631464 is a wasteful number, since it uses less digits than its factorization.

1605422631464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821932 (or 1821928 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 1605422631464 in words is "one trillion, six hundred five billion, four hundred twenty-two million, six hundred thirty-one thousand, four hundred sixty-four".