145018945 has 8 divisors (see below), whose sum is σ = 174165480. Its totient is φ = 115920000.

The previous prime is 145018943. The next prime is 145018997. The reversal of 145018945 is 549810541.

It can be written as a sum of positive squares in 4 ways, for example, as 85544001 + 59474944 = 9249^2 + 7712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145018945 - 2¹ = 145018943 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145018943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806 + ... + 17695.

It is an arithmetic number, because the mean of its divisors is an integer number (21770685).

Almost surely, 2^145018945 is an apocalyptic number.

It is an amenable number.

145018945 is a deficient number, since it is larger than the sum of its proper divisors (29146535).

145018945 is a wasteful number, since it uses less digits than its factorization.

145018945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23795.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 145018945 is about 12042.3812014070. The cubic root of 145018945 is about 525.3816665339.

The spelling of 145018945 in words is "one hundred forty-five million, eighteen thousand, nine hundred forty-five".