163251442 has 8 divisors (see below), whose sum is σ = 259281756. Its totient is φ = 76824192.

The previous prime is 163251427. The next prime is 163251443. The reversal of 163251442 is 244152361.

163251442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 162843121 + 408321 = 12761^2 + 639^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 163251442.

It is not an unprimeable number, because it can be changed into a prime (163251443) 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, 2400723 + ... + 2400790.

Almost surely, 2^163251442 is an apocalyptic number.

163251442 is a deficient number, since it is larger than the sum of its proper divisors (96030314).

163251442 is a wasteful number, since it uses less digits than its factorization.

163251442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801532.

The product of its digits is 5760, while the sum is 28.

The square root of 163251442 is about 12776.9887688766. The cubic root of 163251442 is about 546.5362954197.

The spelling of 163251442 in words is "one hundred sixty-three million, two hundred fifty-one thousand, four hundred forty-two".