161167830 has 64 divisors (see below), whose sum is σ = 395635968. Its totient is φ = 42007680.

The previous prime is 161167829. The next prime is 161167847. The reversal of 161167830 is 38761161.

It is a junction number, because it is equal to n+sod(n) for n = 161167791 and 161167800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363589 + ... + 364031.

It is an arithmetic number, because the mean of its divisors is an integer number (6181812).

Almost surely, 2^161167830 is an apocalyptic number.

161167830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161167830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197817984).

161167830 is an abundant number, since it is smaller than the sum of its proper divisors (234468138).

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

161167830 is a wasteful number, since it uses less digits than its factorization.

161167830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 161167830 is about 12695.1892463248. The cubic root of 161167830 is about 544.2011470508.

The spelling of 161167830 in words is "one hundred sixty-one million, one hundred sixty-seven thousand, eight hundred thirty".