164219397 has 16 divisors (see below), whose sum is σ = 222108480. Its totient is φ = 107916032.

The previous prime is 164219383. The next prime is 164219411. The reversal of 164219397 is 793912461.

It is an interprime number because it is at equal distance from previous prime (164219383) and next prime (164219411).

It is a cyclic number.

It is not a de Polignac number, because 164219397 - 2¹² = 164215301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164217397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65554 + ... + 68012.

It is an arithmetic number, because the mean of its divisors is an integer number (13881780).

Almost surely, 2^164219397 is an apocalyptic number.

It is an amenable number.

164219397 is a deficient number, since it is larger than the sum of its proper divisors (57889083).

164219397 is a wasteful number, since it uses less digits than its factorization.

164219397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772.

The product of its digits is 81648, while the sum is 42.

The square root of 164219397 is about 12814.8116256151. The cubic root of 164219397 is about 547.6143469596.

The spelling of 164219397 in words is "one hundred sixty-four million, two hundred nineteen thousand, three hundred ninety-seven".