165426415 has 16 divisors (see below), whose sum is σ = 247495680. Its totient is φ = 103122720.

The previous prime is 165426403. The next prime is 165426451. The reversal of 165426415 is 514624561.

It is not a de Polignac number, because 165426415 - 2⁹ = 165425903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214455 + ... + 215224.

It is an arithmetic number, because the mean of its divisors is an integer number (15468480).

Almost surely, 2^165426415 is an apocalyptic number.

165426415 is a deficient number, since it is larger than the sum of its proper divisors (82069265).

165426415 is a wasteful number, since it uses less digits than its factorization.

165426415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429702.

The product of its digits is 28800, while the sum is 34.

The square root of 165426415 is about 12861.8200500551. The cubic root of 165426415 is about 548.9527344199.

The spelling of 165426415 in words is "one hundred sixty-five million, four hundred twenty-six thousand, four hundred fifteen".