164398744 has 8 divisors (see below), whose sum is σ = 308247660. Its totient is φ = 82199368.

The previous prime is 164398727. The next prime is 164398747. The reversal of 164398744 is 447893461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 164398694 and 164398703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164398747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10274914 + ... + 10274929.

Almost surely, 2^164398744 is an apocalyptic number.

It is an amenable number.

164398744 is a deficient number, since it is larger than the sum of its proper divisors (143848916).

164398744 is a wasteful number, since it uses less digits than its factorization.

164398744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20549849 (or 20549845 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 164398744 is about 12821.8073608989. The cubic root of 164398744 is about 547.8136276381.

The spelling of 164398744 in words is "one hundred sixty-four million, three hundred ninety-eight thousand, seven hundred forty-four".