149147505 has 48 divisors (see below), whose sum is σ = 280063056. Its totient is φ = 72990720.

The previous prime is 149147503. The next prime is 149147519. The reversal of 149147505 is 505741941.

149147505 is a `hidden beast` number, since 1 + 4 + 9 + 147 + 505 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3196944 + 145950561 = 1788^2 + 12081^2 .

It is not a de Polignac number, because 149147505 - 2¹ = 149147503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149147505.

It is not an unprimeable number, because it can be changed into a prime (149147503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112245 + ... + 113565.

It is an arithmetic number, because the mean of its divisors is an integer number (5834647).

Almost surely, 2^149147505 is an apocalyptic number.

149147505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149147505 is a deficient number, since it is larger than the sum of its proper divisors (130915551).

149147505 is a wasteful number, since it uses less digits than its factorization.

149147505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 149147505 is about 12212.5961613410. The cubic root of 149147505 is about 530.3208037641.

The spelling of 149147505 in words is "one hundred forty-nine million, one hundred forty-seven thousand, five hundred five".