161443714 has 4 divisors (see below), whose sum is σ = 242165574. Its totient is φ = 80721856.

The previous prime is 161443699. The next prime is 161443717. The reversal of 161443714 is 417344161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160858489 + 585225 = 12683^2 + 765^2 .

It is a super-2 number, since 2×161443714² = 52128145580227592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161443717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40360927 + ... + 40360930.

Almost surely, 2^161443714 is an apocalyptic number.

161443714 is a deficient number, since it is larger than the sum of its proper divisors (80721860).

161443714 is an equidigital number, since it uses as much as digits as its factorization.

161443714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80721859.

The product of its digits is 8064, while the sum is 31.

The square root of 161443714 is about 12706.0502911015. The cubic root of 161443714 is about 544.5114877348.

Adding to 161443714 its reverse (417344161), we get a palindrome (578787875).

The spelling of 161443714 in words is "one hundred sixty-one million, four hundred forty-three thousand, seven hundred fourteen".