165541416 has 32 divisors (see below), whose sum is σ = 415332960. Its totient is φ = 54983232.

The previous prime is 165541391. The next prime is 165541423. The reversal of 165541416 is 614145561.

It is a super-2 number, since 2×165541416² = 54807920822570112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5395 + ... + 18978.

It is an arithmetic number, because the mean of its divisors is an integer number (12979155).

Almost surely, 2^165541416 is an apocalyptic number.

It is an amenable number.

165541416 is an abundant number, since it is smaller than the sum of its proper divisors (249791544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165541416 is a wasteful number, since it uses less digits than its factorization.

165541416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24665 (or 24661 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 165541416 is about 12866.2899081281. The cubic root of 165541416 is about 549.0799117918.

Adding to 165541416 its reverse (614145561), we get a palindrome (779686977).

It can be divided in two parts, 1655 and 41416, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 165541416 in words is "one hundred sixty-five million, five hundred forty-one thousand, four hundred sixteen".