1345613444 has 24 divisors (see below), whose sum is σ = 2849535360. Its totient is φ = 542768256.

The previous prime is 1345613429. The next prime is 1345613473. The reversal of 1345613444 is 4443165431.

It is a super-2 number, since 2×1345613444² = 3621351081347082272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412984 + ... + 1413935.

It is an arithmetic number, because the mean of its divisors is an integer number (118730640).

Almost surely, 2^1345613444 is an apocalyptic number.

1345613444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1345613444 is an abundant number, since it is smaller than the sum of its proper divisors (1503921916).

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

1345613444 is a wasteful number, since it uses less digits than its factorization.

1345613444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826947 (or 2826945 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 1345613444 is about 36682.6041060337. The cubic root of 1345613444 is about 1104.0110980908.

Adding to 1345613444 its reverse (4443165431), we get a palindrome (5788778875).

The spelling of 1345613444 in words is "one billion, three hundred forty-five million, six hundred thirteen thousand, four hundred forty-four".