1878760921041 has 81 divisors (see below), whose sum is σ = 2901638194299. Its totient is φ = 1171239722784.

The previous prime is 1878760921007. The next prime is 1878760921043. The reversal of 1878760921041 is 1401290678781.

The square root of 1878760921041 is 1370679.

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

1878760921041 is a `hidden beast` number, since 1 + 8 + 7 + 8 + 7 + 609 + 21 + 0 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1709020217025 + 169740704016 = 1307295^2 + 411996^2 .

It is not a de Polignac number, because 1878760921041 - 2¹³ = 1878760912849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1878760921043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 10859889631 + ... + 10859889803.

Almost surely, 2^{1878760921041} is an apocalyptic number.

1878760921041 is the 1370679-th square number.

1878760921041 is the 685340-th centered octagonal number.

It is an amenable number.

1878760921041 is a deficient number, since it is larger than the sum of its proper divisors (1022877273258).

1878760921041 is an equidigital number, since it uses as much as digits as its factorization.

1878760921041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 1878760921041 in words is "one trillion, eight hundred seventy-eight billion, seven hundred sixty million, nine hundred twenty-one thousand, forty-one".