165250390 has 8 divisors (see below), whose sum is σ = 297450720. Its totient is φ = 66100152.

The previous prime is 165250363. The next prime is 165250447. The reversal of 165250390 is 93052561.

165250390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8262510 + ... + 8262529.

It is an arithmetic number, because the mean of its divisors is an integer number (37181340).

Almost surely, 2^165250390 is an apocalyptic number.

165250390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165250390 is a deficient number, since it is larger than the sum of its proper divisors (132200330).

165250390 is a wasteful number, since it uses less digits than its factorization.

165250390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525046.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 165250390 is about 12854.9753014154. The cubic root of 165250390 is about 548.7579575886.

The spelling of 165250390 in words is "one hundred sixty-five million, two hundred fifty thousand, three hundred ninety".