167667149 has 4 divisors (see below), whose sum is σ = 180564636. Its totient is φ = 154769664.

The previous prime is 167667133. The next prime is 167667161. The reversal of 167667149 is 941766761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32410249 + 135256900 = 5693^2 + 11630^2 .

It is a cyclic number.

It is not a de Polignac number, because 167667149 - 2⁴ = 167667133 is a prime.

It is a super-2 number, since 2×167667149² = 56224545707576402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167667109) 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, 6448724 + ... + 6448749.

It is an arithmetic number, because the mean of its divisors is an integer number (45141159).

Almost surely, 2^167667149 is an apocalyptic number.

It is an amenable number.

167667149 is a deficient number, since it is larger than the sum of its proper divisors (12897487).

167667149 is a wasteful number, since it uses less digits than its factorization.

167667149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12897486.

The product of its digits is 381024, while the sum is 47.

The square root of 167667149 is about 12948.6350245885. The cubic root of 167667149 is about 551.4201853520.

The spelling of 167667149 in words is "one hundred sixty-seven million, six hundred sixty-seven thousand, one hundred forty-nine".