161458903 has 8 divisors (see below), whose sum is σ = 171641520. Its totient is φ = 151444800.

The previous prime is 161458901. The next prime is 161458931. The reversal of 161458903 is 309854161.

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

It is a cyclic number.

It is not a de Polignac number, because 161458903 - 2¹ = 161458901 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161458901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40150 + ... + 43987.

It is an arithmetic number, because the mean of its divisors is an integer number (21455190).

Almost surely, 2^161458903 is an apocalyptic number.

161458903 is a deficient number, since it is larger than the sum of its proper divisors (10182617).

161458903 is a wasteful number, since it uses less digits than its factorization.

161458903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84257.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 161458903 is about 12706.6479844214. The cubic root of 161458903 is about 544.5285635016.

The spelling of 161458903 in words is "one hundred sixty-one million, four hundred fifty-eight thousand, nine hundred three".