1830901345605 has 12 divisors (see below), whose sum is σ = 3173562332460. Its totient is φ = 976480717632.

The previous prime is 1830901345573. The next prime is 1830901345607. The reversal of 1830901345605 is 5065431090381.

1830901345605 is a `hidden beast` number, since 1 + 8 + 3 + 0 + 9 + 0 + 1 + 34 + 5 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 823654262916 + 1007247082689 = 907554^2 + 1003617^2 .

It is not a de Polignac number, because 1830901345605 - 2⁵ = 1830901345573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 40686696569 = 1830901345605 / (1 + 8 + 3 + 0 + 9 + 0 + 1 + 3 + 4 + 5 + 6 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830901345607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20343348240 + ... + 20343348329.

It is an arithmetic number, because the mean of its divisors is an integer number (264463527705).

Almost surely, 2^{1830901345605} is an apocalyptic number.

1830901345605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1830901345605 is a deficient number, since it is larger than the sum of its proper divisors (1342660986855).

1830901345605 is a wasteful number, since it uses less digits than its factorization.

1830901345605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40686696580 (or 40686696577 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 1830901345605 in words is "one trillion, eight hundred thirty billion, nine hundred one million, three hundred forty-five thousand, six hundred five".