378081077 has 12 divisors (see below), whose sum is σ = 419704908. Its totient is φ = 340296000.

The previous prime is 378081073. The next prime is 378081079. The reversal of 378081077 is 770180873.

It can be written as a sum of positive squares in 2 ways, for example, as 216943441 + 161137636 = 14729^2 + 12694^2 .

It is not a de Polignac number, because 378081077 - 2² = 378081073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378081073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3248 + ... + 27689.

It is an arithmetic number, because the mean of its divisors is an integer number (34975409).

Almost surely, 2^378081077 is an apocalyptic number.

It is an amenable number.

378081077 is a deficient number, since it is larger than the sum of its proper divisors (41623831).

378081077 is a wasteful number, since it uses less digits than its factorization.

378081077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31060 (or 31049 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 378081077 is about 19444.3070588797. The cubic root of 378081077 is about 723.0943705582.

The spelling of 378081077 in words is "three hundred seventy-eight million, eighty-one thousand, seventy-seven".