1345557788 has 24 divisors (see below), whose sum is σ = 2369651760. Its totient is φ = 668528000.

The previous prime is 1345557781. The next prime is 1345557791. The reversal of 1345557788 is 8877555431.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345557781) 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 7 ways as a sum of consecutive naturals, for example, 509720 + ... + 512352.

It is an arithmetic number, because the mean of its divisors is an integer number (98735490).

Almost surely, 2^1345557788 is an apocalyptic number.

It is an amenable number.

1345557788 is a deficient number, since it is larger than the sum of its proper divisors (1024093972).

1345557788 is a wasteful number, since it uses less digits than its factorization.

1345557788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397 (or 3395 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 53.

The square root of 1345557788 is about 36681.8454824727. The cubic root of 1345557788 is about 1103.9958768575.

The spelling of 1345557788 in words is "one billion, three hundred forty-five million, five hundred fifty-seven thousand, seven hundred eighty-eight".