378958856249 has 2 divisors, whose sum is σ = 378958856250. Its totient is φ = 378958856248.

The previous prime is 378958856233. The next prime is 378958856333. The reversal of 378958856249 is 942658859873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253753987600 + 125204868649 = 503740^2 + 353843^2 .

It is a cyclic number.

It is not a de Polignac number, because 378958856249 - 2⁴ = 378958856233 is a prime.

It is not a weakly prime, because it can be changed into another prime (378958858249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189479428124 + 189479428125.

It is an arithmetic number, because the mean of its divisors is an integer number (189479428125).

Almost surely, 2^378958856249 is an apocalyptic number.

It is an amenable number.

378958856249 is a deficient number, since it is larger than the sum of its proper divisors (1).

378958856249 is an equidigital number, since it uses as much as digits as its factorization.

378958856249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1045094400, while the sum is 74.

The spelling of 378958856249 in words is "three hundred seventy-eight billion, nine hundred fifty-eight million, eight hundred fifty-six thousand, two hundred forty-nine".