1418916939489 has 81 divisors (see below), whose sum is σ = 2408066557299. Its totient is φ = 802762047360.

The previous prime is 1418916939449. The next prime is 1418916939533. The reversal of 1418916939489 is 9849396198141.

The square root of 1418916939489 is 1191183.

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

1418916939489 is a `hidden beast` number, since 1 + 4 + 1 + 89 + 1 + 69 + 3 + 9 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 159117221025 + 1259799718464 = 398895^2 + 1122408^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1418916939489 is a prime.

It is a super-2 number, since 2×1418916939489² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1418916939449) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3276944217 + ... + 3276944649.

Almost surely, 2^{1418916939489} is an apocalyptic number.

1418916939489 is the 1191183-rd square number.

1418916939489 is the 595592-nd centered octagonal number.

It is an amenable number.

1418916939489 is a deficient number, since it is larger than the sum of its proper divisors (989149617810).

1418916939489 is an frugal number, since it uses more digits than its factorization.

1418916939489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 574 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 72.

The spelling of 1418916939489 in words is "one trillion, four hundred eighteen billion, nine hundred sixteen million, nine hundred thirty-nine thousand, four hundred eighty-nine".