1663170400 has 36 divisors (see below), whose sum is σ = 4060216692. Its totient is φ = 665267840.

The previous prime is 1663170373. The next prime is 1663170409. The reversal of 1663170400 is 40713661.

It is a super-2 number, since 2×1663170400² = 5532271558872320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663170409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1038682 + ... + 1040281.

It is an arithmetic number, because the mean of its divisors is an integer number (112783797).

Almost surely, 2^1663170400 is an apocalyptic number.

1663170400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663170400 is an abundant number, since it is smaller than the sum of its proper divisors (2397046292).

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

1663170400 is a wasteful number, since it uses less digits than its factorization.

1663170400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078983 (or 2078970 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1663170400 is about 40781.9862194082. The cubic root of 1663170400 is about 1184.8014645998.

The spelling of 1663170400 in words is "one billion, six hundred sixty-three million, one hundred seventy thousand, four hundred".