163142494 has 4 divisors (see below), whose sum is σ = 244713744. Its totient is φ = 81571246.

The previous prime is 163142471. The next prime is 163142513. The reversal of 163142494 is 494241361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494241361 = 751 ⋅658111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40785622 + ... + 40785625.

It is an arithmetic number, because the mean of its divisors is an integer number (61178436).

Almost surely, 2^163142494 is an apocalyptic number.

163142494 is a deficient number, since it is larger than the sum of its proper divisors (81571250).

163142494 is an equidigital number, since it uses as much as digits as its factorization.

163142494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81571249.

The product of its digits is 20736, while the sum is 34.

The square root of 163142494 is about 12772.7246114523. The cubic root of 163142494 is about 546.4146889654.

The spelling of 163142494 in words is "one hundred sixty-three million, one hundred forty-two thousand, four hundred ninety-four".