161748790 has 16 divisors (see below), whose sum is σ = 332740512. Its totient is φ = 55456704.

The previous prime is 161748781. The next prime is 161748791. The reversal of 161748790 is 97847161.

161748790 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161748791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155279 + ... + 1155418.

It is an arithmetic number, because the mean of its divisors is an integer number (20796282).

Almost surely, 2^161748790 is an apocalyptic number.

161748790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161748790 is an abundant number, since it is smaller than the sum of its proper divisors (170991722).

161748790 is a wasteful number, since it uses less digits than its factorization.

161748790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310711.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 161748790 is about 12718.0497718793. The cubic root of 161748790 is about 544.8542549988.

It can be divided in two parts, 16174 and 8790, that added together give a square (24964 = 158²).

The spelling of 161748790 in words is "one hundred sixty-one million, seven hundred forty-eight thousand, seven hundred ninety".