149898145 has 8 divisors (see below), whose sum is σ = 179945640. Its totient is φ = 119873280.

The previous prime is 149898079. The next prime is 149898149. The reversal of 149898145 is 541898941.

149898145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 44568976 + 105329169 = 6676^2 + 10263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149898145 - 2⁹ = 149897633 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (149898149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17671 + ... + 24739.

It is an arithmetic number, because the mean of its divisors is an integer number (22493205).

Almost surely, 2^149898145 is an apocalyptic number.

149898145 is the 7069-th octagonal number.

It is an amenable number.

149898145 is a deficient number, since it is larger than the sum of its proper divisors (30047495).

149898145 is an equidigital number, since it uses as much as digits as its factorization.

149898145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315.

The product of its digits is 414720, while the sum is 49.

The square root of 149898145 is about 12243.2897948223. The cubic root of 149898145 is about 531.2089939283.

The spelling of 149898145 in words is "one hundred forty-nine million, eight hundred ninety-eight thousand, one hundred forty-five".