163651442 has 8 divisors (see below), whose sum is σ = 246126000. Its totient is φ = 81609444.

The previous prime is 163651441. The next prime is 163651451. The reversal of 163651442 is 244156361.

163651442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 163651399 and 163651408.

It is not an unprimeable number, because it can be changed into a prime (163651441) 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, 107192 + ... + 108707.

It is an arithmetic number, because the mean of its divisors is an integer number (30765750).

Almost surely, 2^163651442 is an apocalyptic number.

163651442 is a deficient number, since it is larger than the sum of its proper divisors (82474558).

163651442 is a wasteful number, since it uses less digits than its factorization.

163651442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216280.

The product of its digits is 17280, while the sum is 32.

The square root of 163651442 is about 12792.6323327140. The cubic root of 163651442 is about 546.9823072237.

The spelling of 163651442 in words is "one hundred sixty-three million, six hundred fifty-one thousand, four hundred forty-two".