1455551664 has 60 divisors (see below), whose sum is σ = 4374088344. Its totient is φ = 415871232.

The previous prime is 1455551627. The next prime is 1455551681. The reversal of 1455551664 is 4661555541.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307077 + ... + 311780.

Almost surely, 2^1455551664 is an apocalyptic number.

1455551664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1455551664 is an abundant number, since it is smaller than the sum of its proper divisors (2918536680).

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

1455551664 is a wasteful number, since it uses less digits than its factorization.

1455551664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618882 (or 618869 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

The square root of 1455551664 is about 38151.6928064798. The cubic root of 1455551664 is about 1133.2938752891.

The spelling of 1455551664 in words is "one billion, four hundred fifty-five million, five hundred fifty-one thousand, six hundred sixty-four".