1355811912 has 256 divisors, whose sum is σ = 4838400000. Its totient is φ = 341915904.

The previous prime is 1355811883. The next prime is 1355811913. The reversal of 1355811912 is 2191185531.

1355811912 is a `hidden beast` number, since 1 + 3 + 558 + 11 + 91 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1355811913) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 450589 + ... + 453587.

It is an arithmetic number, because the mean of its divisors is an integer number (18900000).

Almost surely, 2^1355811912 is an apocalyptic number.

1355811912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355811912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2419200000).

1355811912 is an abundant number, since it is smaller than the sum of its proper divisors (3482588088).

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

1355811912 is a wasteful number, since it uses less digits than its factorization.

1355811912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057 (or 3047 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 1355811912 is about 36821.3513060018. The cubic root of 1355811912 is about 1106.7931987869.

The spelling of 1355811912 in words is "one billion, three hundred fifty-five million, eight hundred eleven thousand, nine hundred twelve".