161954383 has 8 divisors (see below), whose sum is σ = 166991616. Its totient is φ = 156975000.

The previous prime is 161954381. The next prime is 161954389. The reversal of 161954383 is 383459161.

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 161954383 - 2¹ = 161954381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161954381) 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, 8743 + ... + 20008.

It is an arithmetic number, because the mean of its divisors is an integer number (20873952).

Almost surely, 2^161954383 is an apocalyptic number.

161954383 is a deficient number, since it is larger than the sum of its proper divisors (5037233).

161954383 is a wasteful number, since it uses less digits than its factorization.

161954383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28925.

The product of its digits is 77760, while the sum is 40.

The square root of 161954383 is about 12726.1299301869. The cubic root of 161954383 is about 545.0850053980.

The spelling of 161954383 in words is "one hundred sixty-one million, nine hundred fifty-four thousand, three hundred eighty-three".