1663465530 has 64 divisors (see below), whose sum is σ = 4115276928. Its totient is φ = 430064640.

The previous prime is 1663465511. The next prime is 1663465537. The reversal of 1663465530 is 355643661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1663465537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196342 + ... + 204638.

It is an arithmetic number, because the mean of its divisors is an integer number (64301202).

Almost surely, 2^1663465530 is an apocalyptic number.

1663465530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663465530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057638464).

1663465530 is an abundant number, since it is smaller than the sum of its proper divisors (2451811398).

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

1663465530 is a wasteful number, since it uses less digits than its factorization.

1663465530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8511.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1663465530 is about 40785.6044456865. The cubic root of 1663465530 is about 1184.8715415595.

The spelling of 1663465530 in words is "one billion, six hundred sixty-three million, four hundred sixty-five thousand, five hundred thirty".