163440914 has 48 divisors (see below), whose sum is σ = 311761728. Its totient is φ = 62876736.

The previous prime is 163440911. The next prime is 163440917. The reversal of 163440914 is 419044361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163440911) and next prime (163440917).

It is not an unprimeable number, because it can be changed into a prime (163440911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86609 + ... + 88475.

It is an arithmetic number, because the mean of its divisors is an integer number (6495036).

Almost surely, 2^163440914 is an apocalyptic number.

163440914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

163440914 is a deficient number, since it is larger than the sum of its proper divisors (148320814).

163440914 is a wasteful number, since it uses less digits than its factorization.

163440914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 163440914 is about 12784.4011983354. The cubic root of 163440914 is about 546.7476529993.

The spelling of 163440914 in words is "one hundred sixty-three million, four hundred forty thousand, nine hundred fourteen".