378155963 has 2 divisors, whose sum is σ = 378155964. Its totient is φ = 378155962.

The previous prime is 378155941. The next prime is 378155977. The reversal of 378155963 is 369551873.

It is a strong prime.

It is an emirp because it is prime and its reverse (369551873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378155963 - 2¹⁰ = 378154939 is a prime.

It is not a weakly prime, because it can be changed into another prime (378155263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189077981 + 189077982.

It is an arithmetic number, because the mean of its divisors is an integer number (189077982).

Almost surely, 2^378155963 is an apocalyptic number.

378155963 is a deficient number, since it is larger than the sum of its proper divisors (1).

378155963 is an equidigital number, since it uses as much as digits as its factorization.

378155963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 378155963 is about 19446.2326171421. The cubic root of 378155963 is about 723.1421081764.

The spelling of 378155963 in words is "three hundred seventy-eight million, one hundred fifty-five thousand, nine hundred sixty-three".