149815667 has 2 divisors, whose sum is σ = 149815668. Its totient is φ = 149815666.

The previous prime is 149815657. The next prime is 149815717. The reversal of 149815667 is 766518941.

It is a weak prime.

It is an emirp because it is prime and its reverse (766518941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149815667 - 2¹⁴ = 149799283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149815607) 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 as a sum of consecutive naturals, namely, 74907833 + 74907834.

It is an arithmetic number, because the mean of its divisors is an integer number (74907834).

Almost surely, 2^149815667 is an apocalyptic number.

149815667 is a deficient number, since it is larger than the sum of its proper divisors (1).

149815667 is an equidigital number, since it uses as much as digits as its factorization.

149815667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 149815667 is about 12239.9210373270. The cubic root of 149815667 is about 531.1115475511. Note that the first 3 decimals are identical.

The spelling of 149815667 in words is "one hundred forty-nine million, eight hundred fifteen thousand, six hundred sixty-seven".