167408641 has 4 divisors (see below), whose sum is σ = 168146352. Its totient is φ = 166670932.

The previous prime is 167408623. The next prime is 167408687. The reversal of 167408641 is 146804761.

It is a happy number.

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: 146804761 = 127 ⋅1155943.

It is a cyclic number.

It is not a de Polignac number, because 167408641 - 2¹³ = 167400449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 167408641.

It is not an unprimeable number, because it can be changed into a prime (167408621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368515 + ... + 368968.

It is an arithmetic number, because the mean of its divisors is an integer number (42036588).

Almost surely, 2^167408641 is an apocalyptic number.

It is an amenable number.

167408641 is a deficient number, since it is larger than the sum of its proper divisors (737711).

167408641 is an equidigital number, since it uses as much as digits as its factorization.

167408641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737710.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 167408641 is about 12938.6491180494. The cubic root of 167408641 is about 551.1366476962.

The spelling of 167408641 in words is "one hundred sixty-seven million, four hundred eight thousand, six hundred forty-one".