161833340 has 24 divisors (see below), whose sum is σ = 351570240. Its totient is φ = 62500928.

The previous prime is 161833307. The next prime is 161833349. The reversal of 161833340 is 43338161.

161833340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161833349) 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, 138932 + ... + 140091.

It is an arithmetic number, because the mean of its divisors is an integer number (14648760).

Almost surely, 2^161833340 is an apocalyptic number.

161833340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161833340 is an abundant number, since it is smaller than the sum of its proper divisors (189736900).

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

161833340 is a wasteful number, since it uses less digits than its factorization.

161833340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279061 (or 279059 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 161833340 is about 12721.3733535338. The cubic root of 161833340 is about 544.9491746223.

The spelling of 161833340 in words is "one hundred sixty-one million, eight hundred thirty-three thousand, three hundred forty".