145785494 has 16 divisors (see below), whose sum is σ = 229089600. Its totient is φ = 69486144.

The previous prime is 145785473. The next prime is 145785511. The reversal of 145785494 is 494587541.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11327 + ... + 20490.

It is an arithmetic number, because the mean of its divisors is an integer number (14318100).

Almost surely, 2^145785494 is an apocalyptic number.

145785494 is a deficient number, since it is larger than the sum of its proper divisors (83304106).

145785494 is a wasteful number, since it uses less digits than its factorization.

145785494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31927.

The product of its digits is 806400, while the sum is 47.

The square root of 145785494 is about 12074.1663894449. The cubic root of 145785494 is about 526.3057372371.

The spelling of 145785494 in words is "one hundred forty-five million, seven hundred eighty-five thousand, four hundred ninety-four".