144186946 has 4 divisors (see below), whose sum is σ = 216280422. Its totient is φ = 72093472.

The previous prime is 144186943. The next prime is 144186961. The reversal of 144186946 is 649681441.

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., 139499721 + 4687225 = 11811^2 + 2165^2 .

It is not an unprimeable number, because it can be changed into a prime (144186941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36046735 + ... + 36046738.

Almost surely, 2^144186946 is an apocalyptic number.

144186946 is a deficient number, since it is larger than the sum of its proper divisors (72093476).

144186946 is an equidigital number, since it uses as much as digits as its factorization.

144186946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72093475.

The product of its digits is 165888, while the sum is 43.

The square root of 144186946 is about 12007.7868901809. The cubic root of 144186946 is about 524.3750034971.

The spelling of 144186946 in words is "one hundred forty-four million, one hundred eighty-six thousand, nine hundred forty-six".