1418288644 has 12 divisors (see below), whose sum is σ = 2482545100. Its totient is φ = 708990048.

The previous prime is 1418288623. The next prime is 1418288647. The reversal of 1418288644 is 4468828141.

It can be written as a sum of positive squares in 2 ways, for example, as 919302400 + 498986244 = 30320^2 + 22338^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1418288594 and 1418288603.

It is not an unprimeable number, because it can be changed into a prime (1418288647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16479 + ... + 55750.

Almost surely, 2^1418288644 is an apocalyptic number.

It is an amenable number.

1418288644 is a deficient number, since it is larger than the sum of its proper divisors (1064256456).

1418288644 is a wasteful number, since it uses less digits than its factorization.

1418288644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77142 (or 77140 counting only the distinct ones).

The product of its digits is 393216, while the sum is 46.

The square root of 1418288644 is about 37660.1731806958. The cubic root of 1418288644 is about 1123.5391458892.

The spelling of 1418288644 in words is "one billion, four hundred eighteen million, two hundred eighty-eight thousand, six hundred forty-four".