149194261 has 16 divisors (see below), whose sum is σ = 167128704. Its totient is φ = 132447744.

The previous prime is 149194259. The next prime is 149194319. The reversal of 149194261 is 162491941.

It is a cyclic number.

It is not a de Polignac number, because 149194261 - 2¹ = 149194259 is a prime.

It is a super-2 number, since 2×149194261² = 44517855030672242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149194261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149194231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25930 + ... + 31156.

It is an arithmetic number, because the mean of its divisors is an integer number (10445544).

Almost surely, 2^149194261 is an apocalyptic number.

It is an amenable number.

149194261 is a deficient number, since it is larger than the sum of its proper divisors (17934443).

149194261 is a wasteful number, since it uses less digits than its factorization.

149194261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340.

The product of its digits is 15552, while the sum is 37.

The square root of 149194261 is about 12214.5102644355. The cubic root of 149194261 is about 530.3762144327.

The spelling of 149194261 in words is "one hundred forty-nine million, one hundred ninety-four thousand, two hundred sixty-one".