1355663940 has 48 divisors (see below), whose sum is σ = 3797539200. Its totient is φ = 361350400.

The previous prime is 1355663923. The next prime is 1355663951. The reversal of 1355663940 is 493665531.

It is a junction number, because it is equal to n+sod(n) for n = 1355663892 and 1355663901.

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 15 ways as a sum of consecutive naturals, for example, 203665 + ... + 210215.

It is an arithmetic number, because the mean of its divisors is an integer number (79115400).

Almost surely, 2^1355663940 is an apocalyptic number.

1355663940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355663940 is an abundant number, since it is smaller than the sum of its proper divisors (2441875260).

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

1355663940 is a wasteful number, since it uses less digits than its factorization.

1355663940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012 (or 10010 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The square root of 1355663940 is about 36819.3419278509. The cubic root of 1355663940 is about 1106.7529325424.

The spelling of 1355663940 in words is "one billion, three hundred fifty-five million, six hundred sixty-three thousand, nine hundred forty".