164281387 has 16 divisors (see below), whose sum is σ = 184246272. Its totient is φ = 145664640.

The previous prime is 164281373. The next prime is 164281409. The reversal of 164281387 is 783182461.

It is a cyclic number.

It is not a de Polignac number, because 164281387 - 2¹⁵ = 164248619 is a prime.

It is a super-2 number, since 2×164281387² = 53976748229287538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164281687) 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, 23062 + ... + 29332.

It is an arithmetic number, because the mean of its divisors is an integer number (11515392).

Almost surely, 2^164281387 is an apocalyptic number.

164281387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

164281387 is a deficient number, since it is larger than the sum of its proper divisors (19964885).

164281387 is a wasteful number, since it uses less digits than its factorization.

164281387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378.

The product of its digits is 64512, while the sum is 40.

The square root of 164281387 is about 12817.2300829781. The cubic root of 164281387 is about 547.6832432927.

The spelling of 164281387 in words is "one hundred sixty-four million, two hundred eighty-one thousand, three hundred eighty-seven".