162687394 has 4 divisors (see below), whose sum is σ = 244031094. Its totient is φ = 81343696.

The previous prime is 162687391. The next prime is 162687403. The reversal of 162687394 is 493786261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493786261 = 79 ⋅6250459.

It can be written as a sum of positive squares in only one way, i.e., 134861769 + 27825625 = 11613^2 + 5275^2 .

It is a super-2 number, since 2×162687394² = 52934376333022472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162687391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40671847 + ... + 40671850.

Almost surely, 2^162687394 is an apocalyptic number.

162687394 is a deficient number, since it is larger than the sum of its proper divisors (81343700).

162687394 is an equidigital number, since it uses as much as digits as its factorization.

162687394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81343699.

The product of its digits is 435456, while the sum is 46.

The square root of 162687394 is about 12754.8968635579. The cubic root of 162687394 is about 545.9061255418.

The spelling of 162687394 in words is "one hundred sixty-two million, six hundred eighty-seven thousand, three hundred ninety-four".