165954130 has 32 divisors (see below), whose sum is σ = 305445168. Its totient is φ = 64896000.

The previous prime is 165954127. The next prime is 165954143. The reversal of 165954130 is 31459561.

It can be written as a sum of positive squares in 8 ways, for example, as 102799321 + 63154809 = 10139^2 + 7947^2 .

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 15 ways as a sum of consecutive naturals, for example, 275830 + ... + 276430.

Almost surely, 2^165954130 is an apocalyptic number.

165954130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165954130 is a deficient number, since it is larger than the sum of its proper divisors (139491038).

165954130 is a wasteful number, since it uses less digits than its factorization.

165954130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 165954130 is about 12882.3185025057. The cubic root of 165954130 is about 549.5358397975.

The spelling of 165954130 in words is "one hundred sixty-five million, nine hundred fifty-four thousand, one hundred thirty".