1218498479 has 8 divisors (see below), whose sum is σ = 1329764688. Its totient is φ = 1107314560.

The previous prime is 1218498473. The next prime is 1218498517. The reversal of 1218498479 is 9748948121.

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

It is not a de Polignac number, because 1218498479 - 2⁸ = 1218498223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1218498479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218498473) 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, 12749 + ... + 50985.

It is an arithmetic number, because the mean of its divisors is an integer number (166220586).

Almost surely, 2^1218498479 is an apocalyptic number.

1218498479 is a deficient number, since it is larger than the sum of its proper divisors (111266209).

1218498479 is a wasteful number, since it uses less digits than its factorization.

1218498479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41145.

The product of its digits is 1161216, while the sum is 53.

The square root of 1218498479 is about 34906.9975649582. The cubic root of 1218498479 is about 1068.0911841119.

The spelling of 1218498479 in words is "one billion, two hundred eighteen million, four hundred ninety-eight thousand, four hundred seventy-nine".