1001218372 has 144 divisors (see below), whose sum is σ = 2320796800. Its totient is φ = 377213760.

The previous prime is 1001218363. The next prime is 1001218391. The reversal of 1001218372 is 2738121001.

It is a happy number.

1001218372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6142363 + ... + 6142525.

Almost surely, 2^1001218372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001218372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160398400).

1001218372 is an abundant number, since it is smaller than the sum of its proper divisors (1319578428).

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

1001218372 is a wasteful number, since it uses less digits than its factorization.

1001218372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1001218372 is about 31642.0348903164. The cubic root of 1001218372 is about 1000.4059591748.

Adding to 1001218372 its reverse (2738121001), we get a palindrome (3739339373).

The spelling of 1001218372 in words is "one billion, one million, two hundred eighteen thousand, three hundred seventy-two".