1345511120 has 20 divisors (see below), whose sum is σ = 3128313540. Its totient is φ = 538204416.

The previous prime is 1345511059. The next prime is 1345511129. The reversal of 1345511120 is 211155431.

It can be written as a sum of positive squares in 2 ways, for example, as 221652544 + 1123858576 = 14888^2 + 33524^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345511129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8409365 + ... + 8409524.

It is an arithmetic number, because the mean of its divisors is an integer number (156415677).

Almost surely, 2^1345511120 is an apocalyptic number.

1345511120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345511120 is an abundant number, since it is smaller than the sum of its proper divisors (1782802420).

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

1345511120 is a wasteful number, since it uses less digits than its factorization.

1345511120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16818902 (or 16818896 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1345511120 is about 36681.2093584713. The cubic root of 1345511120 is about 1103.9831134083.

Adding to 1345511120 its reverse (211155431), we get a palindrome (1556666551).

The spelling of 1345511120 in words is "one billion, three hundred forty-five million, five hundred eleven thousand, one hundred twenty".