164381003 has 4 divisors (see below), whose sum is σ = 169683648. Its totient is φ = 159078360.

The previous prime is 164380999. The next prime is 164381011. The reversal of 164381003 is 300183461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300183461 = 8969 ⋅33469.

It is not a de Polignac number, because 164381003 - 2² = 164380999 is a prime.

It is a super-2 number, since 2×164381003² = 54042228294572018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164381033) 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, 2651276 + ... + 2651337.

It is an arithmetic number, because the mean of its divisors is an integer number (42420912).

Almost surely, 2^164381003 is an apocalyptic number.

164381003 is a deficient number, since it is larger than the sum of its proper divisors (5302645).

164381003 is an equidigital number, since it uses as much as digits as its factorization.

164381003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302644.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 164381003 is about 12821.1155130901. The cubic root of 164381003 is about 547.7939212605.

The spelling of 164381003 in words is "one hundred sixty-four million, three hundred eighty-one thousand, three".