1923735712145 has 32 divisors (see below), whose sum is σ = 2555813345568. Its totient is φ = 1380822018048.

The previous prime is 1923735712141. The next prime is 1923735712163. The reversal of 1923735712145 is 5412175373291.

It is a Cunningham number, because it is equal to 1386988²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 202349727889 + 1721385984256 = 449833^2 + 1312016^2 .

It is a cyclic number.

It is not a de Polignac number, because 1923735712145 - 2² = 1923735712141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1923735712093 and 1923735712102.

It is not an unprimeable number, because it can be changed into a prime (1923735712141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1996637 + ... + 2798933.

It is an arithmetic number, because the mean of its divisors is an integer number (79869167049).

Almost surely, 2^{1923735712145} is an apocalyptic number.

It is an amenable number.

1923735712145 is a deficient number, since it is larger than the sum of its proper divisors (632077633423).

1923735712145 is a wasteful number, since it uses less digits than its factorization.

1923735712145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803349.

The product of its digits is 1587600, while the sum is 50.

The spelling of 1923735712145 in words is "one trillion, nine hundred twenty-three billion, seven hundred thirty-five million, seven hundred twelve thousand, one hundred forty-five".