1372681345 has 12 divisors (see below), whose sum is σ = 1916151444. Its totient is φ = 941267040.

The previous prime is 1372681319. The next prime is 1372681351. The reversal of 1372681345 is 5431862731.

It can be written as a sum of positive squares in 2 ways, for example, as 919544976 + 453136369 = 30324^2 + 21287^2 .

It is not a de Polignac number, because 1372681345 - 2⁹ = 1372680833 is a prime.

It is a super-2 number, since 2×1372681345² = 3768508149822018050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1372681298 and 1372681307.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2801146 + ... + 2801635.

It is an arithmetic number, because the mean of its divisors is an integer number (159679287).

Almost surely, 2^1372681345 is an apocalyptic number.

It is an amenable number.

1372681345 is a deficient number, since it is larger than the sum of its proper divisors (543470099).

1372681345 is an equidigital number, since it uses as much as digits as its factorization.

1372681345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602800 (or 5602793 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 1372681345 is about 37049.7145063224. The cubic root of 1372681345 is about 1111.3646460344.

The spelling of 1372681345 in words is "one billion, three hundred seventy-two million, six hundred eighty-one thousand, three hundred forty-five".