1372673545 has 16 divisors (see below), whose sum is σ = 1719474768. Its totient is φ = 1050935040.
The previous prime is 1372673539. The next prime is 1372673579. The reversal of 1372673545 is 5453762731.
It can be written as a sum of positive squares in 8 ways, for example, as 324468169 + 1048205376 = 18013^2 + 32376^2 .
It is not a de Polignac number, because 1372673545 - 25 = 1372673513 is a prime.
It is a super-2 number, since 2×13726735452 = 3768465322285734050, which contains 22 as substring.
It is a Duffinian number.
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 15 ways as a sum of consecutive naturals, for example, 49534 + ... + 72103.
It is an arithmetic number, because the mean of its divisors is an integer number (107467173).
Almost surely, 21372673545 is an apocalyptic number.
It is an amenable number.
1372673545 is a deficient number, since it is larger than the sum of its proper divisors (346801223).
1372673545 is a wasteful number, since it uses less digits than its factorization.
1372673545 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 121740.
The product of its digits is 529200, while the sum is 43.
The square root of 1372673545 is about 37049.6092422039. The cubic root of 1372673545 is about 1111.3625409912.
The spelling of 1372673545 in words is "one billion, three hundred seventy-two million, six hundred seventy-three thousand, five hundred forty-five".
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