145116644 has 6 divisors (see below), whose sum is σ = 253954134. Its totient is φ = 72558320.

The previous prime is 145116617. The next prime is 145116649. The reversal of 145116644 is 446611541.

It can be written as a sum of positive squares in only one way, i.e., 103022500 + 42094144 = 10150^2 + 6488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145116644.

It is not an unprimeable number, because it can be changed into a prime (145116649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18139577 + ... + 18139584.

It is an arithmetic number, because the mean of its divisors is an integer number (42325689).

Almost surely, 2^145116644 is an apocalyptic number.

It is an amenable number.

145116644 is a deficient number, since it is larger than the sum of its proper divisors (108837490).

145116644 is a wasteful number, since it uses less digits than its factorization.

145116644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36279165 (or 36279163 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 145116644 is about 12046.4369836064. The cubic root of 145116644 is about 525.4996229405.

The spelling of 145116644 in words is "one hundred forty-five million, one hundred sixteen thousand, six hundred forty-four".