1630164405 has 16 divisors (see below), whose sum is σ = 2639689920. Its totient is φ = 858945408.

The previous prime is 1630164397. The next prime is 1630164421. The reversal of 1630164405 is 5044610361.

It is not a de Polignac number, because 1630164405 - 2³ = 1630164397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653440 + ... + 655929.

It is an arithmetic number, because the mean of its divisors is an integer number (164980620).

Almost surely, 2^1630164405 is an apocalyptic number.

1630164405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630164405 is a deficient number, since it is larger than the sum of its proper divisors (1009525515).

1630164405 is a wasteful number, since it uses less digits than its factorization.

1630164405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309460.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1630164405 is about 40375.2944880901. The cubic root of 1630164405 is about 1176.9114877735.

Adding to 1630164405 its reverse (5044610361), we get a palindrome (6674774766).

The spelling of 1630164405 in words is "one billion, six hundred thirty million, one hundred sixty-four thousand, four hundred five".