145890347 has 2 divisors, whose sum is σ = 145890348. Its totient is φ = 145890346.

The previous prime is 145890343. The next prime is 145890383. The reversal of 145890347 is 743098541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145890347 - 2² = 145890343 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (145890343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72945173 + 72945174.

It is an arithmetic number, because the mean of its divisors is an integer number (72945174).

Almost surely, 2^145890347 is an apocalyptic number.

145890347 is a deficient number, since it is larger than the sum of its proper divisors (1).

145890347 is an equidigital number, since it uses as much as digits as its factorization.

145890347 is an evil number, because the sum of its binary digits is even.

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

The square root of 145890347 is about 12078.5076478843. The cubic root of 145890347 is about 526.4318849287.

The spelling of 145890347 in words is "one hundred forty-five million, eight hundred ninety thousand, three hundred forty-seven".