378331949137 has 2 divisors, whose sum is σ = 378331949138. Its totient is φ = 378331949136.

The previous prime is 378331949101. The next prime is 378331949201. The reversal of 378331949137 is 731949133873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224561306641 + 153770642496 = 473879^2 + 392136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378331949137 is a prime.

It is not a weakly prime, because it can be changed into another prime (378331940137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189165974568 + 189165974569.

It is an arithmetic number, because the mean of its divisors is an integer number (189165974569).

Almost surely, 2^378331949137 is an apocalyptic number.

It is an amenable number.

378331949137 is a deficient number, since it is larger than the sum of its proper divisors (1).

378331949137 is an equidigital number, since it uses as much as digits as its factorization.

378331949137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 58.

The spelling of 378331949137 in words is "three hundred seventy-eight billion, three hundred thirty-one million, nine hundred forty-nine thousand, one hundred thirty-seven".