164995274 has 4 divisors (see below), whose sum is σ = 247492914. Its totient is φ = 82497636.

The previous prime is 164995273. The next prime is 164995277. The reversal of 164995274 is 472599461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472599461 = 557 ⋅848473.

It can be written as a sum of positive squares in only one way, i.e., 157678249 + 7317025 = 12557^2 + 2705^2 .

It is not an unprimeable number, because it can be changed into a prime (164995273) 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, 41248817 + ... + 41248820.

Almost surely, 2^164995274 is an apocalyptic number.

164995274 is a deficient number, since it is larger than the sum of its proper divisors (82497640).

164995274 is an equidigital number, since it uses as much as digits as its factorization.

164995274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82497639.

The product of its digits is 544320, while the sum is 47.

The square root of 164995274 is about 12845.0486180473. The cubic root of 164995274 is about 548.4754185881.

The spelling of 164995274 in words is "one hundred sixty-four million, nine hundred ninety-five thousand, two hundred seventy-four".