1464631221 has 8 divisors (see below), whose sum is σ = 1967749344. Its totient is φ = 968966960.

The previous prime is 1464631171. The next prime is 1464631279. The reversal of 1464631221 is 1221364641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1464631221 - 2⁹ = 1464630709 is a prime.

It is a super-2 number, since 2×1464631221² = 4290289227055901682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1468631221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863006 + ... + 1863791.

It is an arithmetic number, because the mean of its divisors is an integer number (245968668).

Almost surely, 2^1464631221 is an apocalyptic number.

It is an amenable number.

1464631221 is a deficient number, since it is larger than the sum of its proper divisors (503118123).

1464631221 is a wasteful number, since it uses less digits than its factorization.

1464631221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726931.

The product of its digits is 6912, while the sum is 30.

The square root of 1464631221 is about 38270.5006630433. The cubic root of 1464631221 is about 1135.6454429466.

Adding to 1464631221 its reverse (1221364641), we get a palindrome (2685995862).

The spelling of 1464631221 in words is "one billion, four hundred sixty-four million, six hundred thirty-one thousand, two hundred twenty-one".