1353185020 has 24 divisors (see below), whose sum is σ = 3100024368. Its totient is φ = 492067200.

The previous prime is 1353184993. The next prime is 1353185027. The reversal of 1353185020 is 205813531.

It is a super-2 number, since 2×1353185020² = 3662219396704800800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1353185020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353185027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3075201 + ... + 3075640.

It is an arithmetic number, because the mean of its divisors is an integer number (129167682).

Almost surely, 2^1353185020 is an apocalyptic number.

1353185020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1353185020 is an abundant number, since it is smaller than the sum of its proper divisors (1746839348).

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

1353185020 is a wasteful number, since it uses less digits than its factorization.

1353185020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150861 (or 6150859 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1353185020 is about 36785.6632399091. The cubic root of 1353185020 is about 1106.0779309549.

Adding to 1353185020 its reverse (205813531), we get a palindrome (1558998551).

The spelling of 1353185020 in words is "one billion, three hundred fifty-three million, one hundred eighty-five thousand, twenty".