145194665 has 16 divisors (see below), whose sum is σ = 217226880. Its totient is φ = 90510720.

The previous prime is 145194661. The next prime is 145194683. The reversal of 145194665 is 566491541.

It is not a de Polignac number, because 145194665 - 2² = 145194661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145194661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188180 + ... + 188949.

It is an arithmetic number, because the mean of its divisors is an integer number (13576680).

Almost surely, 2^145194665 is an apocalyptic number.

It is an amenable number.

145194665 is a deficient number, since it is larger than the sum of its proper divisors (72032215).

145194665 is a wasteful number, since it uses less digits than its factorization.

145194665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377152.

The product of its digits is 129600, while the sum is 41.

The square root of 145194665 is about 12049.6748918799. The cubic root of 145194665 is about 525.5937831952.

The spelling of 145194665 in words is "one hundred forty-five million, one hundred ninety-four thousand, six hundred sixty-five".