1001241645 has 32 divisors (see below), whose sum is σ = 1668522240. Its totient is φ = 512225280.

The previous prime is 1001241643. The next prime is 1001241671. The reversal of 1001241645 is 5461421001.

It is a happy number.

It is not a de Polignac number, because 1001241645 - 2¹ = 1001241643 is a prime.

It is a super-3 number, since 3×1001241645³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001241643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26701 + ... + 52109.

It is an arithmetic number, because the mean of its divisors is an integer number (52141320).

Almost surely, 2^1001241645 is an apocalyptic number.

1001241645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001241645 is a deficient number, since it is larger than the sum of its proper divisors (667280595).

1001241645 is a wasteful number, since it uses less digits than its factorization.

1001241645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25525.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1001241645 is about 31642.4026426566. The cubic root of 1001241645 is about 1000.4137104867.

Adding to 1001241645 its reverse (5461421001), we get a palindrome (6462662646).

The spelling of 1001241645 in words is "one billion, one million, two hundred forty-one thousand, six hundred forty-five".