378183137 has 2 divisors, whose sum is σ = 378183138. Its totient is φ = 378183136.

The previous prime is 378183131. The next prime is 378183187. The reversal of 378183137 is 731381873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305865121 + 72318016 = 17489^2 + 8504^2 .

It is an emirp because it is prime and its reverse (731381873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378183137 - 2⁴ = 378183121 is a prime.

It is a super-2 number, since 2×378183137² = 286044970222321538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 378183094 and 378183103.

It is not a weakly prime, because it can be changed into another prime (378183131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189091568 + 189091569.

It is an arithmetic number, because the mean of its divisors is an integer number (189091569).

Almost surely, 2^378183137 is an apocalyptic number.

It is an amenable number.

378183137 is a deficient number, since it is larger than the sum of its proper divisors (1).

378183137 is an equidigital number, since it uses as much as digits as its factorization.

378183137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 378183137 is about 19446.9313003363. The cubic root of 378183137 is about 723.1594292422.

The spelling of 378183137 in words is "three hundred seventy-eight million, one hundred eighty-three thousand, one hundred thirty-seven".