164877983 has 4 divisors (see below), whose sum is σ = 164987208. Its totient is φ = 164768760.

The previous prime is 164877913. The next prime is 164877989. The reversal of 164877983 is 389778461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389778461 = 37 ⋅10534553.

It is a cyclic number.

It is not a de Polignac number, because 164877983 - 2¹⁶ = 164812447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164877989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52316 + ... + 55377.

It is an arithmetic number, because the mean of its divisors is an integer number (41246802).

Almost surely, 2^164877983 is an apocalyptic number.

164877983 is a deficient number, since it is larger than the sum of its proper divisors (109225).

164877983 is a wasteful number, since it uses less digits than its factorization.

164877983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109224.

The product of its digits is 2032128, while the sum is 53.

The square root of 164877983 is about 12840.4821949956. The cubic root of 164877983 is about 548.3454219754.

The spelling of 164877983 in words is "one hundred sixty-four million, eight hundred seventy-seven thousand, nine hundred eighty-three".