163690642 has 8 divisors (see below), whose sum is σ = 248994432. Its totient is φ = 80692500.

The previous prime is 163690619. The next prime is 163690651. The reversal of 163690642 is 246096361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576234 + ... + 576517.

It is an arithmetic number, because the mean of its divisors is an integer number (31124304).

Almost surely, 2^163690642 is an apocalyptic number.

163690642 is a deficient number, since it is larger than the sum of its proper divisors (85303790).

163690642 is a wasteful number, since it uses less digits than its factorization.

163690642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152824.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 163690642 is about 12794.1643728694. The cubic root of 163690642 is about 547.0259772629.

The spelling of 163690642 in words is "one hundred sixty-three million, six hundred ninety thousand, six hundred forty-two".