162978674 has 4 divisors (see below), whose sum is σ = 244468014. Its totient is φ = 81489336.

The previous prime is 162978619. The next prime is 162978689. The reversal of 162978674 is 476879261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476879261 = 193 ⋅2470877.

It can be written as a sum of positive squares in only one way, i.e., 115713049 + 47265625 = 10757^2 + 6875^2 .

It is a Curzon 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, 40744667 + ... + 40744670.

Almost surely, 2^162978674 is an apocalyptic number.

162978674 is a deficient number, since it is larger than the sum of its proper divisors (81489340).

162978674 is an equidigital number, since it uses as much as digits as its factorization.

162978674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81489339.

The product of its digits is 1016064, while the sum is 50.

The square root of 162978674 is about 12766.3101168662. The cubic root of 162978674 is about 546.2317330911.

The spelling of 162978674 in words is "one hundred sixty-two million, nine hundred seventy-eight thousand, six hundred seventy-four".