164331451 has 4 divisors (see below), whose sum is σ = 166311432. Its totient is φ = 162351472.

The previous prime is 164331439. The next prime is 164331463. The reversal of 164331451 is 154133461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154133461 = 233 ⋅661517.

It is an interprime number because it is at equal distance from previous prime (164331439) and next prime (164331463).

It is a cyclic number.

It is not a de Polignac number, because 164331451 - 2²⁷ = 30113723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164331421) 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, 989866 + ... + 990031.

It is an arithmetic number, because the mean of its divisors is an integer number (41577858).

Almost surely, 2^164331451 is an apocalyptic number.

164331451 is a deficient number, since it is larger than the sum of its proper divisors (1979981).

164331451 is an equidigital number, since it uses as much as digits as its factorization.

164331451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979980.

The product of its digits is 4320, while the sum is 28.

The square root of 164331451 is about 12819.1829302807. The cubic root of 164331451 is about 547.7388722953.

The spelling of 164331451 in words is "one hundred sixty-four million, three hundred thirty-one thousand, four hundred fifty-one".