1831326945 has 64 divisors (see below), whose sum is σ = 3491389440. Its totient is φ = 801964800.

The previous prime is 1831326911. The next prime is 1831327021. The reversal of 1831326945 is 5496231381.

It is not a de Polignac number, because 1831326945 - 2⁶ = 1831326881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1831326897 and 1831326906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396600 + ... + 401190.

It is an arithmetic number, because the mean of its divisors is an integer number (54552960).

Almost surely, 2^1831326945 is an apocalyptic number.

1831326945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1831326945 is a deficient number, since it is larger than the sum of its proper divisors (1660062495).

1831326945 is a wasteful number, since it uses less digits than its factorization.

1831326945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766.

The product of its digits is 155520, while the sum is 42.

The square root of 1831326945 is about 42794.0059470950. The cubic root of 1831326945 is about 1223.4567700006.

The spelling of 1831326945 in words is "one billion, eight hundred thirty-one million, three hundred twenty-six thousand, nine hundred forty-five".