149085641 has 4 divisors (see below), whose sum is σ = 149736900. Its totient is φ = 148434384.

The previous prime is 149085619. The next prime is 149085649. The reversal of 149085641 is 146580941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146580941 = 13 ⋅11275457.

It can be written as a sum of positive squares in 2 ways, for example, as 104142025 + 44943616 = 10205^2 + 6704^2 .

It is a cyclic number.

It is not a de Polignac number, because 149085641 - 2¹⁸ = 148823497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149085595 and 149085604.

It is not an unprimeable number, because it can be changed into a prime (149085649) 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, 325286 + ... + 325743.

It is an arithmetic number, because the mean of its divisors is an integer number (37434225).

Almost surely, 2^149085641 is an apocalyptic number.

It is an amenable number.

149085641 is a deficient number, since it is larger than the sum of its proper divisors (651259).

149085641 is an equidigital number, since it uses as much as digits as its factorization.

149085641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651258.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 149085641 is about 12210.0631038500. The cubic root of 149085641 is about 530.2474707611.

The spelling of 149085641 in words is "one hundred forty-nine million, eighty-five thousand, six hundred forty-one".