1013605920 has 384 divisors, whose sum is σ = 3821126400. Its totient is φ = 250159104.

The previous prime is 1013605907. The next prime is 1013605927. The reversal of 1013605920 is 295063101.

1013605920 is a `hidden beast` number, since 1 + 0 + 13 + 60 + 592 + 0 = 666.

It is a super-2 number, since 2×1013605920² = 2054793922118092800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1013605927) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 4350124 + ... + 4350356.

It is an arithmetic number, because the mean of its divisors is an integer number (9950850).

Almost surely, 2^1013605920 is an apocalyptic number.

1013605920 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 1013605920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1910563200).

1013605920 is an abundant number, since it is smaller than the sum of its proper divisors (2807520480).

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

1013605920 is a wasteful number, since it uses less digits than its factorization.

1013605920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1013605920 is about 31837.1782669256. The cubic root of 1013605920 is about 1004.5148917417.

The spelling of 1013605920 in words is "one billion, thirteen million, six hundred five thousand, nine hundred twenty".