149148145 has 4 divisors (see below), whose sum is σ = 178977780. Its totient is φ = 119318512.

The previous prime is 149148137. The next prime is 149148173. The reversal of 149148145 is 541841941.

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 99980001 + 49168144 = 9999^2 + 7012^2 .

It is a cyclic number.

It is not a de Polignac number, because 149148145 - 2³ = 149148137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14914810 + ... + 14914819.

It is an arithmetic number, because the mean of its divisors is an integer number (44744445).

Almost surely, 2^149148145 is an apocalyptic number.

It is an amenable number.

149148145 is a deficient number, since it is larger than the sum of its proper divisors (29829635).

149148145 is an equidigital number, since it uses as much as digits as its factorization.

149148145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29829634.

The product of its digits is 23040, while the sum is 37.

The square root of 149148145 is about 12212.6223637677. The cubic root of 149148145 is about 530.3215623081.

The spelling of 149148145 in words is "one hundred forty-nine million, one hundred forty-eight thousand, one hundred forty-five".