1601788456 has 16 divisors (see below), whose sum is σ = 3007826100. Its totient is φ = 799701504.

The previous prime is 1601788429. The next prime is 1601788469. The reversal of 1601788456 is 6548871061.

It can be written as a sum of positive squares in 2 ways, for example, as 1492585956 + 109202500 = 38634^2 + 10450^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143371 + ... + 154138.

Almost surely, 2^1601788456 is an apocalyptic number.

It is an amenable number.

1601788456 is a deficient number, since it is larger than the sum of its proper divisors (1406037644).

1601788456 is a wasteful number, since it uses less digits than its factorization.

1601788456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298188 (or 298184 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 1601788456 is about 40022.3494562726. The cubic root of 1601788456 is about 1170.0427227685.

The spelling of 1601788456 in words is "one billion, six hundred one million, seven hundred eighty-eight thousand, four hundred fifty-six".