145988473 has 2 divisors, whose sum is σ = 145988474. Its totient is φ = 145988472.

The previous prime is 145988459. The next prime is 145988489. The reversal of 145988473 is 374889541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135210384 + 10778089 = 11628^2 + 3283^2 .

It is a cyclic number.

It is not a de Polignac number, because 145988473 - 2¹⁷ = 145857401 is a prime.

It is not a weakly prime, because it can be changed into another prime (145988873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72994236 + 72994237.

It is an arithmetic number, because the mean of its divisors is an integer number (72994237).

Almost surely, 2^145988473 is an apocalyptic number.

It is an amenable number.

145988473 is a deficient number, since it is larger than the sum of its proper divisors (1).

145988473 is an equidigital number, since it uses as much as digits as its factorization.

145988473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 145988473 is about 12082.5689735255. The cubic root of 145988473 is about 526.5498846893.

The spelling of 145988473 in words is "one hundred forty-five million, nine hundred eighty-eight thousand, four hundred seventy-three".