163507653 has 12 divisors (see below), whose sum is σ = 244925408. Its totient is φ = 109004940.

The previous prime is 163507637. The next prime is 163507681. The reversal of 163507653 is 356705361.

It is a happy number.

It is not a de Polignac number, because 163507653 - 2⁴ = 163507637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163507693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336193 + ... + 336678.

Almost surely, 2^163507653 is an apocalyptic number.

It is an amenable number.

163507653 is a deficient number, since it is larger than the sum of its proper divisors (81417755).

163507653 is an frugal number, since it uses more digits than its factorization.

163507653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672886 (or 672874 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 163507653 is about 12787.0111050237. The cubic root of 163507653 is about 546.8220620017.

The spelling of 163507653 in words is "one hundred sixty-three million, five hundred seven thousand, six hundred fifty-three".