165248990 has 16 divisors (see below), whose sum is σ = 297611280. Its totient is φ = 66063360.

The previous prime is 165248969. The next prime is 165248999. The reversal of 165248990 is 99842561.

It is a super-4 number, since 4×165248990⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165248999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22046 + ... + 28574.

It is an arithmetic number, because the mean of its divisors is an integer number (18600705).

Almost surely, 2^165248990 is an apocalyptic number.

165248990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165248990 is a deficient number, since it is larger than the sum of its proper divisors (132362290).

165248990 is a wasteful number, since it uses less digits than its factorization.

165248990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 165248990 is about 12854.9208476754. The cubic root of 165248990 is about 548.7564078932.

The spelling of 165248990 in words is "one hundred sixty-five million, two hundred forty-eight thousand, nine hundred ninety".