161254830 has 32 divisors (see below), whose sum is σ = 422195328. Its totient is φ = 39092000.

The previous prime is 161254823. The next prime is 161254831. The reversal of 161254830 is 38452161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161254831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243996 + ... + 244655.

It is an arithmetic number, because the mean of its divisors is an integer number (13193604).

Almost surely, 2^161254830 is an apocalyptic number.

161254830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161254830 is an abundant number, since it is smaller than the sum of its proper divisors (260940498).

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

161254830 is a wasteful number, since it uses less digits than its factorization.

161254830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488672.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 161254830 is about 12698.6152788404. The cubic root of 161254830 is about 544.2990511697.

The spelling of 161254830 in words is "one hundred sixty-one million, two hundred fifty-four thousand, eight hundred thirty".