149819405 has 8 divisors (see below), whose sum is σ = 179891712. Its totient is φ = 119783248.

The previous prime is 149819381. The next prime is 149819431. The reversal of 149819405 is 504918941.

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

It is a cyclic number.

It is not a de Polignac number, because 149819405 - 2⁸ = 149819149 is a prime.

It is a super-2 number, since 2×149819405² = 44891708229108050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1124 + ... + 17346.

It is an arithmetic number, because the mean of its divisors is an integer number (22486464).

Almost surely, 2^149819405 is an apocalyptic number.

It is an amenable number.

149819405 is a deficient number, since it is larger than the sum of its proper divisors (30072307).

149819405 is a wasteful number, since it uses less digits than its factorization.

149819405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18075.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 149819405 is about 12240.0737334380. The cubic root of 149819405 is about 531.1159647092.

The spelling of 149819405 in words is "one hundred forty-nine million, eight hundred nineteen thousand, four hundred five".