1001621465 has 32 divisors (see below), whose sum is σ = 1344591360. Its totient is φ = 711523584.

The previous prime is 1001621429. The next prime is 1001621473. The reversal of 1001621465 is 5641261001.

It is a cyclic number.

It is not a de Polignac number, because 1001621465 - 2⁸ = 1001621209 is a prime.

It is an unprimeable number.

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, 177467 + ... + 183023.

It is an arithmetic number, because the mean of its divisors is an integer number (42018480).

Almost surely, 2^1001621465 is an apocalyptic number.

It is an amenable number.

1001621465 is a deficient number, since it is larger than the sum of its proper divisors (342969895).

1001621465 is a wasteful number, since it uses less digits than its factorization.

1001621465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1001621465 is about 31648.4038302092. The cubic root of 1001621465 is about 1000.5401964686.

Adding to 1001621465 its reverse (5641261001), we get a palindrome (6642882466).

The spelling of 1001621465 in words is "one billion, one million, six hundred twenty-one thousand, four hundred sixty-five".