164031772 has 12 divisors (see below), whose sum is σ = 296954280. Its totient is φ = 79187696.

The previous prime is 164031761. The next prime is 164031773. The reversal of 164031772 is 277130461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164031773) 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, 706918 + ... + 707149.

It is an arithmetic number, because the mean of its divisors is an integer number (24746190).

Almost surely, 2^164031772 is an apocalyptic number.

It is an amenable number.

164031772 is a deficient number, since it is larger than the sum of its proper divisors (132922508).

164031772 is a wasteful number, since it uses less digits than its factorization.

164031772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414100 (or 1414098 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 164031772 is about 12807.4889029817. The cubic root of 164031772 is about 547.4057128627.

The spelling of 164031772 in words is "one hundred sixty-four million, thirty-one thousand, seven hundred seventy-two".