161487830 has 96 divisors (see below), whose sum is σ = 358344000. Its totient is φ = 52364928.

The previous prime is 161487827. The next prime is 161487841. The reversal of 161487830 is 38784161.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1814426 + ... + 1814514.

It is an arithmetic number, because the mean of its divisors is an integer number (3732750).

Almost surely, 2^161487830 is an apocalyptic number.

161487830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161487830 is an abundant number, since it is smaller than the sum of its proper divisors (196856170).

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

161487830 is an equidigital number, since it uses as much as digits as its factorization.

161487830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 161487830 is about 12707.7861958722. The cubic root of 161487830 is about 544.5610808313.

The spelling of 161487830 in words is "one hundred sixty-one million, four hundred eighty-seven thousand, eight hundred thirty".