378370073 has 2 divisors, whose sum is σ = 378370074. Its totient is φ = 378370072.

The previous prime is 378370019. The next prime is 378370087. The reversal of 378370073 is 370073873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226291849 + 152078224 = 15043^2 + 12332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378370073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (378370873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189185036 + 189185037.

It is an arithmetic number, because the mean of its divisors is an integer number (189185037).

Almost surely, 2^378370073 is an apocalyptic number.

It is an amenable number.

378370073 is a deficient number, since it is larger than the sum of its proper divisors (1).

378370073 is an equidigital number, since it uses as much as digits as its factorization.

378370073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 378370073 is about 19451.7370175519. The cubic root of 378370073 is about 723.2785622318.

The spelling of 378370073 in words is "three hundred seventy-eight million, three hundred seventy thousand, seventy-three".