145771494 has 16 divisors (see below), whose sum is σ = 318047040. Its totient is φ = 44173160.

The previous prime is 145771463. The next prime is 145771531. The reversal of 145771494 is 494177541.

145771494 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104264 + ... + 1104395.

It is an arithmetic number, because the mean of its divisors is an integer number (19877940).

Almost surely, 2^145771494 is an apocalyptic number.

145771494 is an abundant number, since it is smaller than the sum of its proper divisors (172275546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145771494 is a wasteful number, since it uses less digits than its factorization.

145771494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208675.

The product of its digits is 141120, while the sum is 42.

The square root of 145771494 is about 12073.5866253570. The cubic root of 145771494 is about 526.2888893876.

The spelling of 145771494 in words is "one hundred forty-five million, seven hundred seventy-one thousand, four hundred ninety-four".