161995430 has 8 divisors (see below), whose sum is σ = 291591792. Its totient is φ = 64798168.

The previous prime is 161995411. The next prime is 161995441. The reversal of 161995430 is 34599161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8099762 + ... + 8099781.

It is an arithmetic number, because the mean of its divisors is an integer number (36448974).

Almost surely, 2^161995430 is an apocalyptic number.

161995430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161995430 is a deficient number, since it is larger than the sum of its proper divisors (129596362).

161995430 is a wasteful number, since it uses less digits than its factorization.

161995430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16199550.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 161995430 is about 12727.7425335367. The cubic root of 161995430 is about 545.1310517267.

The spelling of 161995430 in words is "one hundred sixty-one million, nine hundred ninety-five thousand, four hundred thirty".