2040145493 has 2 divisors, whose sum is σ = 2040145494. Its totient is φ = 2040145492.

The previous prime is 2040145489. The next prime is 2040145531. The reversal of 2040145493 is 3945410402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1744064644 + 296080849 = 41762^2 + 17207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040145493 - 2² = 2040145489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040145193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020072746 + 1020072747.

It is an arithmetic number, because the mean of its divisors is an integer number (1020072747).

Almost surely, 2^2040145493 is an apocalyptic number.

It is an amenable number.

2040145493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040145493 is an equidigital number, since it uses as much as digits as its factorization.

2040145493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2040145493 is about 45167.9697684100. The cubic root of 2040145493 is about 1268.2952912916.

Adding to 2040145493 its reverse (3945410402), we get a palindrome (5985555895).

The spelling of 2040145493 in words is "two billion, forty million, one hundred forty-five thousand, four hundred ninety-three".