1778953083076 has 81 divisors (see below), whose sum is σ = 3454178837319. Its totient is φ = 801288738432.

The previous prime is 1778953083073. The next prime is 1778953083101. The reversal of 1778953083076 is 6703803598771.

The square root of 1778953083076 is 1333774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 241055468676 + 1537897614400 = 490974^2 + 1240120^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1778953082999 and 1778953083017.

It is not an unprimeable number, because it can be changed into a prime (1778953083073) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1491158736 + ... + 1491159928.

Almost surely, 2^{1778953083076} is an apocalyptic number.

1778953083076 is the 1333774-th square number.

It is an amenable number.

1778953083076 is a deficient number, since it is larger than the sum of its proper divisors (1675225754243).

1778953083076 is an equidigital number, since it uses as much as digits as its factorization.

1778953083076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 64.

Multiplying 1778953083076 by its sum of digits (64), we get a square (113852997316864 = 10670192²).

The spelling of 1778953083076 in words is "one trillion, seven hundred seventy-eight billion, nine hundred fifty-three million, eighty-three thousand, seventy-six".