1326402018 has 12 divisors (see below), whose sum is σ = 2873871078. Its totient is φ = 442134000.

The previous prime is 1326402013. The next prime is 1326402047. The reversal of 1326402018 is 8102046231.

1326402018 is a `hidden beast` number, since 1 + 3 + 2 + 640 + 2 + 0 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1151448489 + 174953529 = 33933^2 + 13227^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1326401982 and 1326402000.

It is not an unprimeable number, because it can be changed into a prime (1326402013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36844483 + ... + 36844518.

Almost surely, 2^1326402018 is an apocalyptic number.

1326402018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1326402018 is an abundant number, since it is smaller than the sum of its proper divisors (1547469060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1326402018 is a wasteful number, since it uses less digits than its factorization.

1326402018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73689009 (or 73689006 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1326402018 is about 36419.8025530068. The cubic root of 1326402018 is about 1098.7318769118.

Adding to 1326402018 its reverse (8102046231), we get a palindrome (9428448249).

The spelling of 1326402018 in words is "one billion, three hundred twenty-six million, four hundred two thousand, eighteen".