145749774 has 8 divisors (see below), whose sum is σ = 291499560. Its totient is φ = 48583256.

The previous prime is 145749763. The next prime is 145749787. The reversal of 145749774 is 477947541.

It is a happy number.

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

145749774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12145809 + ... + 12145820.

It is an arithmetic number, because the mean of its divisors is an integer number (36437445).

Almost surely, 2^145749774 is an apocalyptic number.

145749774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145749774 is a wasteful number, since it uses less digits than its factorization.

145749774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24291634.

The product of its digits is 987840, while the sum is 48.

The square root of 145749774 is about 12072.6871076824. The cubic root of 145749774 is about 526.2627490174.

The spelling of 145749774 in words is "one hundred forty-five million, seven hundred forty-nine thousand, seven hundred seventy-four".