164019137 has 4 divisors (see below), whose sum is σ = 164047296. Its totient is φ = 163990980.

The previous prime is 164019133. The next prime is 164019211. The reversal of 164019137 is 731910461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731910461 = 47 ⋅15572563.

It is a cyclic number.

It is not a de Polignac number, because 164019137 - 2² = 164019133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164019133) 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, 1733 + ... + 18194.

It is an arithmetic number, because the mean of its divisors is an integer number (41011824).

Almost surely, 2^164019137 is an apocalyptic number.

It is an amenable number.

164019137 is a deficient number, since it is larger than the sum of its proper divisors (28159).

164019137 is an equidigital number, since it uses as much as digits as its factorization.

164019137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28158.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 164019137 is about 12806.9956273905. The cubic root of 164019137 is about 547.3916573565.

Adding to 164019137 its reverse (731910461), we get a palindrome (895929598).

The spelling of 164019137 in words is "one hundred sixty-four million, nineteen thousand, one hundred thirty-seven".