161003793 has 8 divisors (see below), whose sum is σ = 215405568. Its totient is φ = 106968944.

The previous prime is 161003779. The next prime is 161003803. The reversal of 161003793 is 397300161.

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 161003793 - 2¹⁶ = 160938257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161003793.

It is not an unprimeable number, because it can be changed into a prime (161003593) 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, 90705 + ... + 92462.

It is an arithmetic number, because the mean of its divisors is an integer number (26925696).

Almost surely, 2^161003793 is an apocalyptic number.

It is an amenable number.

161003793 is a deficient number, since it is larger than the sum of its proper divisors (54401775).

161003793 is a wasteful number, since it uses less digits than its factorization.

161003793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183463.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 161003793 is about 12688.7270047078. The cubic root of 161003793 is about 544.0164546367.

The spelling of 161003793 in words is "one hundred sixty-one million, three thousand, seven hundred ninety-three".