149091867 has 16 divisors (see below), whose sum is σ = 226265760. Its totient is φ = 96969600.

The previous prime is 149091851. The next prime is 149091883. The reversal of 149091867 is 768190941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (149091851) and next prime (149091883).

It is not a de Polignac number, because 149091867 - 2⁴ = 149091851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149091827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66234 + ... + 68447.

It is an arithmetic number, because the mean of its divisors is an integer number (14141610).

Almost surely, 2^149091867 is an apocalyptic number.

149091867 is a deficient number, since it is larger than the sum of its proper divisors (77173893).

149091867 is a wasteful number, since it uses less digits than its factorization.

149091867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134731 (or 134725 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 149091867 is about 12210.3180548256. The cubic root of 149091867 is about 530.2548519209.

The spelling of 149091867 in words is "one hundred forty-nine million, ninety-one thousand, eight hundred sixty-seven".