1218305613962 has 4 divisors (see below), whose sum is σ = 1827458420946. Its totient is φ = 609152806980.

The previous prime is 1218305613961. The next prime is 1218305613979. The reversal of 1218305613962 is 2693165038121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1214489957521 + 3815656441 = 1102039^2 + 61771^2 .

It is a super-2 number, since 2×1218305613962² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1218305613961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304576403489 + ... + 304576403492.

Almost surely, 2^{1218305613962} is an apocalyptic number.

1218305613962 is a deficient number, since it is larger than the sum of its proper divisors (609152806984).

1218305613962 is an equidigital number, since it uses as much as digits as its factorization.

1218305613962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609152806983.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 1218305613962 in words is "one trillion, two hundred eighteen billion, three hundred five million, six hundred thirteen thousand, nine hundred sixty-two".