164409988 has 24 divisors (see below), whose sum is σ = 297932544. Its totient is φ = 79303200.

The previous prime is 164409953. The next prime is 164409989. The reversal of 164409988 is 889904461.

It is a super-3 number, since 3×164409988³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164409989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41118 + ... + 44938.

It is an arithmetic number, because the mean of its divisors is an integer number (12413856).

Almost surely, 2^164409988 is an apocalyptic number.

It is an amenable number.

164409988 is a deficient number, since it is larger than the sum of its proper divisors (133522556).

164409988 is a wasteful number, since it uses less digits than its factorization.

164409988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203 (or 4201 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 164409988 is about 12822.2458251275. The cubic root of 164409988 is about 547.8261165332.

The spelling of 164409988 in words is "one hundred sixty-four million, four hundred nine thousand, nine hundred eighty-eight".