1355978860 has 12 divisors (see below), whose sum is σ = 2847555648. Its totient is φ = 542391536.

The previous prime is 1355978851. The next prime is 1355978891. The reversal of 1355978860 is 688795531.

It is a junction number, because it is equal to n+sod(n) for n = 1355978798 and 1355978807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33899452 + ... + 33899491.

It is an arithmetic number, because the mean of its divisors is an integer number (237296304).

Almost surely, 2^1355978860 is an apocalyptic number.

1355978860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355978860 is an abundant number, since it is smaller than the sum of its proper divisors (1491576788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355978860 is a wasteful number, since it uses less digits than its factorization.

1355978860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67798952 (or 67798950 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The square root of 1355978860 is about 36823.6182361267. The cubic root of 1355978860 is about 1106.8386252765.

The spelling of 1355978860 in words is "one billion, three hundred fifty-five million, nine hundred seventy-eight thousand, eight hundred sixty".