145746149 has 2 divisors, whose sum is σ = 145746150. Its totient is φ = 145746148.

The previous prime is 145746143. The next prime is 145746187. The reversal of 145746149 is 941647541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120846049 + 24900100 = 10993^2 + 4990^2 .

It is a cyclic number.

It is not a de Polignac number, because 145746149 - 2²⁰ = 144697573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145746143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72873074 + 72873075.

It is an arithmetic number, because the mean of its divisors is an integer number (72873075).

Almost surely, 2^145746149 is an apocalyptic number.

It is an amenable number.

145746149 is a deficient number, since it is larger than the sum of its proper divisors (1).

145746149 is an equidigital number, since it uses as much as digits as its factorization.

145746149 is an evil number, because the sum of its binary digits is even.

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

The square root of 145746149 is about 12072.5369744723. The cubic root of 145746149 is about 526.2583860186.

The spelling of 145746149 in words is "one hundred forty-five million, seven hundred forty-six thousand, one hundred forty-nine".