147845381 has 2 divisors, whose sum is σ = 147845382. Its totient is φ = 147845380.

The previous prime is 147845371. The next prime is 147845387. The reversal of 147845381 is 183548741.

147845381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 27394756 = 10975^2 + 5234^2 .

It is a cyclic number.

It is not a de Polignac number, because 147845381 - 2²⁶ = 80736517 is a prime.

It is a super-2 number, since 2×147845381² = 43716513366070322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147845387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73922690 + 73922691.

It is an arithmetic number, because the mean of its divisors is an integer number (73922691).

Almost surely, 2^147845381 is an apocalyptic number.

It is an amenable number.

147845381 is a deficient number, since it is larger than the sum of its proper divisors (1).

147845381 is an equidigital number, since it uses as much as digits as its factorization.

147845381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 147845381 is about 12159.1685982225. The cubic root of 147845381 is about 528.7729784886.

The spelling of 147845381 in words is "one hundred forty-seven million, eight hundred forty-five thousand, three hundred eighty-one".