161933345 has 32 divisors (see below), whose sum is σ = 229032960. Its totient is φ = 107619840.

The previous prime is 161933339. The next prime is 161933353. The reversal of 161933345 is 543339161.

It is not a de Polignac number, because 161933345 - 2⁴ = 161933329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155336 + ... + 156374.

It is an arithmetic number, because the mean of its divisors is an integer number (7157280).

Almost surely, 2^161933345 is an apocalyptic number.

It is an amenable number.

161933345 is a deficient number, since it is larger than the sum of its proper divisors (67099615).

161933345 is a wasteful number, since it uses less digits than its factorization.

161933345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its digits is 29160, while the sum is 35.

The square root of 161933345 is about 12725.3033362667. The cubic root of 161933345 is about 545.0614020542.

The spelling of 161933345 in words is "one hundred sixty-one million, nine hundred thirty-three thousand, three hundred forty-five".