164137789 has 8 divisors (see below), whose sum is σ = 173052000. Its totient is φ = 155251152.

The previous prime is 164137783. The next prime is 164137793. The reversal of 164137789 is 987731461.

164137789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164137789 - 2³ = 164137781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164137781) 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, 5967 + ... + 19075.

It is an arithmetic number, because the mean of its divisors is an integer number (21631500).

Almost surely, 2^164137789 is an apocalyptic number.

164137789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

164137789 is a deficient number, since it is larger than the sum of its proper divisors (8914211).

164137789 is a wasteful number, since it uses less digits than its factorization.

164137789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13787.

The product of its digits is 254016, while the sum is 46.

The square root of 164137789 is about 12811.6271019726. The cubic root of 164137789 is about 547.5236205346.

The spelling of 164137789 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, seven hundred eighty-nine".