145982594 has 4 divisors (see below), whose sum is σ = 218973894. Its totient is φ = 72991296.

The previous prime is 145982593. The next prime is 145982623. The reversal of 145982594 is 495289541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 495289541 = 607 ⋅815963.

It can be written as a sum of positive squares in only one way, i.e., 95785369 + 50197225 = 9787^2 + 7085^2 .

It is a super-3 number, since 3×145982594³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145982593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36495647 + ... + 36495650.

Almost surely, 2^145982594 is an apocalyptic number.

145982594 is a deficient number, since it is larger than the sum of its proper divisors (72991300).

145982594 is an equidigital number, since it uses as much as digits as its factorization.

145982594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72991299.

The product of its digits is 518400, while the sum is 47.

The square root of 145982594 is about 12082.3256867211. The cubic root of 145982594 is about 526.5428164866.

The spelling of 145982594 in words is "one hundred forty-five million, nine hundred eighty-two thousand, five hundred ninety-four".