1418673948561 has 9 divisors (see below), whose sum is σ = 2049200864841. Its totient is φ = 945780250212.

The previous prime is 1418673948533. The next prime is 1418673948607. The reversal of 1418673948561 is 1658493768141.

The square root of 1418673948561 is 1191081.

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

1418673948561 is a `hidden beast` number, since 1 + 4 + 1 + 8 + 67 + 3 + 9 + 4 + 8 + 561 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1418673948561 - 2³⁹ = 868918134673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1418673948061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3374730 + ... + 3771756.

Almost surely, 2^{1418673948561} is an apocalyptic number.

1418673948561 is the 1191081-st square number.

1418673948561 is the 595541-st centered octagonal number.

It is an amenable number.

1418673948561 is a deficient number, since it is larger than the sum of its proper divisors (630526916280).

1418673948561 is an frugal number, since it uses more digits than its factorization.

1418673948561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794060 (or 397030 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 1418673948561 in words is "one trillion, four hundred eighteen billion, six hundred seventy-three million, nine hundred forty-eight thousand, five hundred sixty-one".