149078205 has 64 divisors (see below), whose sum is σ = 276291840. Its totient is φ = 76204800.

The previous prime is 149078201. The next prime is 149078207. The reversal of 149078205 is 502870941.

It is not a de Polignac number, because 149078205 - 2² = 149078201 is a prime.

It is a super-2 number, since 2×149078205² = 44448622412044050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149078205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149078201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 353895 + ... + 354315.

It is an arithmetic number, because the mean of its divisors is an integer number (4317060).

Almost surely, 2^149078205 is an apocalyptic number.

149078205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149078205 is a deficient number, since it is larger than the sum of its proper divisors (127213635).

149078205 is a wasteful number, since it uses less digits than its factorization.

149078205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 149078205 is about 12209.7585971222. The cubic root of 149078205 is about 530.2386548311.

The spelling of 149078205 in words is "one hundred forty-nine million, seventy-eight thousand, two hundred five".