1863645876041 has 4 divisors (see below), whose sum is σ = 1944673957632. Its totient is φ = 1782617794452.

The previous prime is 1863645876031. The next prime is 1863645876107. The reversal of 1863645876041 is 1406785463681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1863645876041 - 2¹⁰ = 1863645875017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1863645876011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40514040761 + ... + 40514040806.

It is an arithmetic number, because the mean of its divisors is an integer number (486168489408).

Almost surely, 2^{1863645876041} is an apocalyptic number.

It is an amenable number.

1863645876041 is a deficient number, since it is larger than the sum of its proper divisors (81028081591).

1863645876041 is an equidigital number, since it uses as much as digits as its factorization.

1863645876041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81028081590.

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 1863645876041 in words is "one trillion, eight hundred sixty-three billion, six hundred forty-five million, eight hundred seventy-six thousand, forty-one".