1013550120 has 96 divisors (see below), whose sum is σ = 3593509920. Its totient is φ = 245708160.

The previous prime is 1013550103. The next prime is 1013550121. The reversal of 1013550120 is 210553101.

1013550120 is a `hidden beast` number, since 10 + 135 + 501 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1013550093 and 1013550102.

It is not an unprimeable number, because it can be changed into a prime (1013550121) 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 23 ways as a sum of consecutive naturals, for example, 124014 + ... + 131933.

It is an arithmetic number, because the mean of its divisors is an integer number (37432395).

Almost surely, 2^1013550120 is an apocalyptic number.

1013550120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013550120 is an abundant number, since it is smaller than the sum of its proper divisors (2579959800).

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

1013550120 is a wasteful number, since it uses less digits than its factorization.

1013550120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255975 (or 255968 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1013550120 is about 31836.3019209204. The cubic root of 1013550120 is about 1004.4964582267.

The spelling of 1013550120 in words is "one billion, thirteen million, five hundred fifty thousand, one hundred twenty".