1018675637641 has 8 divisors (see below), whose sum is σ = 1019826242568. Its totient is φ = 1017525600000.

The previous prime is 1018675637611. The next prime is 1018675637647. The reversal of 1018675637641 is 1467365768101.

It can be written as a sum of positive squares in 4 ways, for example, as 60616409616 + 958059228025 = 246204^2 + 978805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1018675637641 - 2³⁷ = 881236684169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018675637647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3504331 + ... + 3783871.

It is an arithmetic number, because the mean of its divisors is an integer number (127478280321).

Almost surely, 2^{1018675637641} is an apocalyptic number.

It is an amenable number.

1018675637641 is a deficient number, since it is larger than the sum of its proper divisors (1150604927).

1018675637641 is a wasteful number, since it uses less digits than its factorization.

1018675637641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283643.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 1018675637641 in words is "one trillion, eighteen billion, six hundred seventy-five million, six hundred thirty-seven thousand, six hundred forty-one".