165868010 has 48 divisors (see below), whose sum is σ = 375072768. Its totient is φ = 51696480.

The previous prime is 165867983. The next prime is 165868013. The reversal of 165868010 is 10868561.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (165868013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1322 + ... + 18261.

It is an arithmetic number, because the mean of its divisors is an integer number (7814016).

Almost surely, 2^165868010 is an apocalyptic number.

165868010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165868010 is an abundant number, since it is smaller than the sum of its proper divisors (209204758).

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

165868010 is a wasteful number, since it uses less digits than its factorization.

165868010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619 (or 19608 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 165868010 is about 12878.9755027331. The cubic root of 165868010 is about 549.4407649008.

The spelling of 165868010 in words is "one hundred sixty-five million, eight hundred sixty-eight thousand, ten".