145146749 has 8 divisors (see below), whose sum is σ = 158544192. Its totient is φ = 131783040.

The previous prime is 145146739. The next prime is 145146761. The reversal of 145146749 is 947641541.

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

It is a cyclic number.

It is not a de Polignac number, because 145146749 - 2⁴ = 145146733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145146709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 17069.

It is an arithmetic number, because the mean of its divisors is an integer number (19818024).

Almost surely, 2^145146749 is an apocalyptic number.

It is an amenable number.

145146749 is a deficient number, since it is larger than the sum of its proper divisors (13397443).

145146749 is a wasteful number, since it uses less digits than its factorization.

145146749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16867.

The product of its digits is 120960, while the sum is 41.

The square root of 145146749 is about 12047.6864584035. The cubic root of 145146749 is about 525.5359593934.

The spelling of 145146749 in words is "one hundred forty-five million, one hundred forty-six thousand, seven hundred forty-nine".