1345555776 has 28 divisors (see below), whose sum is σ = 3560116832. Its totient is φ = 448518528.

The previous prime is 1345555769. The next prime is 1345555777. The reversal of 1345555776 is 6775555431.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345555777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3503860 + ... + 3504243.

Almost surely, 2^1345555776 is an apocalyptic number.

1345555776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1345555776 is an abundant number, since it is smaller than the sum of its proper divisors (2214561056).

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

1345555776 is an equidigital number, since it uses as much as digits as its factorization.

1345555776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7008118 (or 7008108 counting only the distinct ones).

The product of its digits is 2205000, while the sum is 48.

The square root of 1345555776 is about 36681.8180574518. The cubic root of 1345555776 is about 1103.9953265923.

The spelling of 1345555776 in words is "one billion, three hundred forty-five million, five hundred fifty-five thousand, seven hundred seventy-six".