1351345444 has 12 divisors (see below), whose sum is σ = 2403623068. Its totient is φ = 664596000.

The previous prime is 1351345433. The next prime is 1351345447. The reversal of 1351345444 is 4445431531.

It can be written as a sum of positive squares in 2 ways, for example, as 78996544 + 1272348900 = 8888^2 + 35670^2 .

It is a super-2 number, since 2×1351345444² = 3652269018039114272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1351345447) 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 3 ways as a sum of consecutive naturals, for example, 2768907 + ... + 2769394.

Almost surely, 2^1351345444 is an apocalyptic number.

It is an amenable number.

1351345444 is a deficient number, since it is larger than the sum of its proper divisors (1052277624).

1351345444 is a wasteful number, since it uses less digits than its factorization.

1351345444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538366 (or 5538364 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 1351345444 is about 36760.6507559374. The cubic root of 1351345444 is about 1105.5764875435.

Adding to 1351345444 its reverse (4445431531), we get a palindrome (5796776975).

The spelling of 1351345444 in words is "one billion, three hundred fifty-one million, three hundred forty-five thousand, four hundred forty-four".