1365535020 has 96 divisors (see below), whose sum is σ = 3899125440. Its totient is φ = 356981760.

The previous prime is 1365535019. The next prime is 1365535043. The reversal of 1365535020 is 205355631.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 1862574 + ... + 1863306.

It is an arithmetic number, because the mean of its divisors is an integer number (40615890).

Almost surely, 2^1365535020 is an apocalyptic number.

1365535020 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 1365535020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1949562720).

1365535020 is an abundant number, since it is smaller than the sum of its proper divisors (2533590420).

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

1365535020 is a wasteful number, since it uses less digits than its factorization.

1365535020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 1365535020 is about 36953.1462801207. The cubic root of 1365535020 is about 1109.4326619450.

The spelling of 1365535020 in words is "one billion, three hundred sixty-five million, five hundred thirty-five thousand, twenty".