1355559940 has 192 divisors, whose sum is σ = 3746856960. Its totient is φ = 400619520.

The previous prime is 1355559937. The next prime is 1355559967. The reversal of 1355559940 is 499555531.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1401337 + ... + 1402303.

It is an arithmetic number, because the mean of its divisors is an integer number (19514880).

Almost surely, 2^1355559940 is an apocalyptic number.

1355559940 is a gapful number since it is divisible by the number (10) 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 1355559940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873428480).

1355559940 is an abundant number, since it is smaller than the sum of its proper divisors (2391297020).

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

1355559940 is a wasteful number, since it uses less digits than its factorization.

1355559940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 46.

The square root of 1355559940 is about 36817.9295995850. The cubic root of 1355559940 is about 1106.7246302360.

The spelling of 1355559940 in words is "one billion, three hundred fifty-five million, five hundred fifty-nine thousand, nine hundred forty".