161472693 has 4 divisors (see below), whose sum is σ = 215296928. Its totient is φ = 107648460.

The previous prime is 161472691. The next prime is 161472757. The reversal of 161472693 is 396274161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 161472693 - 2¹ = 161472691 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161472691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26912113 + ... + 26912118.

It is an arithmetic number, because the mean of its divisors is an integer number (53824232).

Almost surely, 2^161472693 is an apocalyptic number.

It is an amenable number.

161472693 is a deficient number, since it is larger than the sum of its proper divisors (53824235).

161472693 is an equidigital number, since it uses as much as digits as its factorization.

161472693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53824234.

The product of its digits is 54432, while the sum is 39.

The square root of 161472693 is about 12707.1906021748. The cubic root of 161472693 is about 544.5440655581.

It can be divided in two parts, 161472 and 693, that added together give a triangular number (162165 = T₅₆₉).

The spelling of 161472693 in words is "one hundred sixty-one million, four hundred seventy-two thousand, six hundred ninety-three".