378101897 has 2 divisors, whose sum is σ = 378101898. Its totient is φ = 378101896.

The previous prime is 378101863. The next prime is 378101917. The reversal of 378101897 is 798101873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378069136 + 32761 = 19444^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 378101897 - 2⁶ = 378101833 is a prime.

It is a super-2 number, since 2×378101897² = 285922089029997218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378101497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189050948 + 189050949.

It is an arithmetic number, because the mean of its divisors is an integer number (189050949).

Almost surely, 2^378101897 is an apocalyptic number.

It is an amenable number.

378101897 is a deficient number, since it is larger than the sum of its proper divisors (1).

378101897 is an equidigital number, since it uses as much as digits as its factorization.

378101897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 378101897 is about 19444.8424267208. The cubic root of 378101897 is about 723.1076433272.

The spelling of 378101897 in words is "three hundred seventy-eight million, one hundred one thousand, eight hundred ninety-seven".