1355779863 has 48 divisors (see below), whose sum is σ = 2107830816. Its totient is φ = 870134400.

The previous prime is 1355779837. The next prime is 1355779877. The reversal of 1355779863 is 3689775531.

1355779863 is a `hidden beast` number, since 1 + 3 + 5 + 577 + 9 + 8 + 63 = 666.

It is not a de Polignac number, because 1355779863 - 2²² = 1351585559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355779063) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 907345 + ... + 908837.

It is an arithmetic number, because the mean of its divisors is an integer number (43913142).

Almost surely, 2^1355779863 is an apocalyptic number.

1355779863 is a deficient number, since it is larger than the sum of its proper divisors (752050953).

1355779863 is a wasteful number, since it uses less digits than its factorization.

1355779863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1634 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The square root of 1355779863 is about 36820.9161075604. The cubic root of 1355779863 is about 1106.7844778391.

The spelling of 1355779863 in words is "one billion, three hundred fifty-five million, seven hundred seventy-nine thousand, eight hundred sixty-three".