378074681 has 2 divisors, whose sum is σ = 378074682. Its totient is φ = 378074680.

The previous prime is 378074663. The next prime is 378074689. The reversal of 378074681 is 186470873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364199056 + 13875625 = 19084^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 378074681 - 2²⁶ = 310965817 is a prime.

It is a super-2 number, since 2×378074681² = 285880928826503522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378074689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189037340 + 189037341.

It is an arithmetic number, because the mean of its divisors is an integer number (189037341).

Almost surely, 2^378074681 is an apocalyptic number.

It is an amenable number.

378074681 is a deficient number, since it is larger than the sum of its proper divisors (1).

378074681 is an equidigital number, since it uses as much as digits as its factorization.

378074681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 378074681 is about 19444.1425884506. The cubic root of 378074681 is about 723.0902930045.

The spelling of 378074681 in words is "three hundred seventy-eight million, seventy-four thousand, six hundred eighty-one".