165410890 has 8 divisors (see below), whose sum is σ = 297739620. Its totient is φ = 66164352.

The previous prime is 165410887. The next prime is 165410897. The reversal of 165410890 is 98014561.

It can be written as a sum of positive squares in 2 ways, for example, as 160706329 + 4704561 = 12677^2 + 2169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (165410897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270535 + ... + 8270554.

Almost surely, 2^165410890 is an apocalyptic number.

165410890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165410890 is a deficient number, since it is larger than the sum of its proper divisors (132328730).

165410890 is a wasteful number, since it uses less digits than its factorization.

165410890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541096.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 165410890 is about 12861.2165054477. The cubic root of 165410890 is about 548.9355611089.

It can be divided in two parts, 1654 and 10890, that added together give a square (12544 = 112²).

The spelling of 165410890 in words is "one hundred sixty-five million, four hundred ten thousand, eight hundred ninety".