165830951 has 16 divisors (see below), whose sum is σ = 195407520. Its totient is φ = 138741120.

The previous prime is 165830947. The next prime is 165830969. The reversal of 165830951 is 159038561.

It is a cyclic number.

It is not a de Polignac number, because 165830951 - 2² = 165830947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165830911) 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 15 ways as a sum of consecutive naturals, for example, 51785 + ... + 54893.

It is an arithmetic number, because the mean of its divisors is an integer number (12212970).

Almost surely, 2^165830951 is an apocalyptic number.

165830951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165830951 is a deficient number, since it is larger than the sum of its proper divisors (29576569).

165830951 is a wasteful number, since it uses less digits than its factorization.

165830951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 165830951 is about 12877.5366821454. The cubic root of 165830951 is about 549.3998423184.

The spelling of 165830951 in words is "one hundred sixty-five million, eight hundred thirty thousand, nine hundred fifty-one".