161203454 has 8 divisors (see below), whose sum is σ = 242809248. Its totient is φ = 80267040.

The previous prime is 161203453. The next prime is 161203457. The reversal of 161203454 is 454302161.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161203453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166742 + ... + 167705.

It is an arithmetic number, because the mean of its divisors is an integer number (30351156).

Almost surely, 2^161203454 is an apocalyptic number.

161203454 is a deficient number, since it is larger than the sum of its proper divisors (81605794).

161203454 is a wasteful number, since it uses less digits than its factorization.

161203454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334690.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 161203454 is about 12696.5922199620. The cubic root of 161203454 is about 544.2412402329.

The spelling of 161203454 in words is "one hundred sixty-one million, two hundred three thousand, four hundred fifty-four".