162787738 has 4 divisors (see below), whose sum is σ = 244181610. Its totient is φ = 81393868.

The previous prime is 162787717. The next prime is 162787739. The reversal of 162787738 is 837787261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837787261 = 6301 ⋅132961.

It can be written as a sum of positive squares in only one way, i.e., 115412049 + 47375689 = 10743^2 + 6883^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 162787691 and 162787700.

It is not an unprimeable number, because it can be changed into a prime (162787739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40696933 + ... + 40696936.

Almost surely, 2^162787738 is an apocalyptic number.

162787738 is a deficient number, since it is larger than the sum of its proper divisors (81393872).

162787738 is an equidigital number, since it uses as much as digits as its factorization.

162787738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81393871.

The product of its digits is 790272, while the sum is 49.

The square root of 162787738 is about 12758.8298052760. The cubic root of 162787738 is about 546.0183390013.

The spelling of 162787738 in words is "one hundred sixty-two million, seven hundred eighty-seven thousand, seven hundred thirty-eight".