1355805372 has 12 divisors (see below), whose sum is σ = 3163545896. Its totient is φ = 451935120.

The previous prime is 1355805359. The next prime is 1355805389. The reversal of 1355805372 is 2735085531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1355805372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56491879 + ... + 56491902.

Almost surely, 2^1355805372 is an apocalyptic number.

1355805372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1355805372 is an abundant number, since it is smaller than the sum of its proper divisors (1807740524).

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

1355805372 is a wasteful number, since it uses less digits than its factorization.

1355805372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112983788 (or 112983786 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 1355805372 is about 36821.2624987248. The cubic root of 1355805372 is about 1106.7914191794.

The spelling of 1355805372 in words is "one billion, three hundred fifty-five million, eight hundred five thousand, three hundred seventy-two".