163093640 has 16 divisors (see below), whose sum is σ = 366960780. Its totient is φ = 65237440.

The previous prime is 163093639. The next prime is 163093643. The reversal of 163093640 is 46390361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 157904356 + 5189284 = 12566^2 + 2278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163093597 and 163093606.

It is not an unprimeable number, because it can be changed into a prime (163093643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038631 + ... + 2038710.

Almost surely, 2^163093640 is an apocalyptic number.

163093640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163093640 is an abundant number, since it is smaller than the sum of its proper divisors (203867140).

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

163093640 is a wasteful number, since it uses less digits than its factorization.

163093640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077352 (or 4077348 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 163093640 is about 12770.8120336962. The cubic root of 163093640 is about 546.3601411330.

The spelling of 163093640 in words is "one hundred sixty-three million, ninety-three thousand, six hundred forty".