163135400 has 48 divisors (see below), whose sum is σ = 401609340. Its totient is φ = 61414400.

The previous prime is 163135381. The next prime is 163135439. The reversal of 163135400 is 4531361.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 61811044 + 101324356 = 7862^2 + 10066^2 .

It is a super-2 number, since 2×163135400² = 53226317466320000, which contains 22 as substring.

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, 20591 + ... + 27390.

Almost surely, 2^163135400 is an apocalyptic number.

163135400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163135400 is an abundant number, since it is smaller than the sum of its proper divisors (238473940).

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

163135400 is a wasteful number, since it uses less digits than its factorization.

163135400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48014 (or 48005 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 163135400 is about 12772.4469073079. The cubic root of 163135400 is about 546.4067688503.

Adding to 163135400 its reverse (4531361), we get a palindrome (167666761).

The spelling of 163135400 in words is "one hundred sixty-three million, one hundred thirty-five thousand, four hundred".