1355539020 has 48 divisors (see below), whose sum is σ = 4140557568. Its totient is φ = 328615360.

The previous prime is 1355539001. The next prime is 1355539037. The reversal of 1355539020 is 209355531.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026264 + ... + 1027583.

It is an arithmetic number, because the mean of its divisors is an integer number (86261616).

Almost surely, 2^1355539020 is an apocalyptic number.

1355539020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355539020 is an abundant number, since it is smaller than the sum of its proper divisors (2785018548).

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

1355539020 is a wasteful number, since it uses less digits than its factorization.

1355539020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053870 (or 2053868 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 1355539020 is about 36817.6454977773. The cubic root of 1355539020 is about 1106.7189369434.

The spelling of 1355539020 in words is "one billion, three hundred fifty-five million, five hundred thirty-nine thousand, twenty".