378881953 has 2 divisors, whose sum is σ = 378881954. Its totient is φ = 378881952.

The previous prime is 378881947. The next prime is 378881959. The reversal of 378881953 is 359188873.

It is a balanced prime because it is at equal distance from previous prime (378881947) and next prime (378881959).

It can be written as a sum of positive squares in only one way, i.e., 290089024 + 88792929 = 17032^2 + 9423^2 .

It is a cyclic number.

It is not a de Polignac number, because 378881953 - 2⁹ = 378881441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378881953.

It is not a weakly prime, because it can be changed into another prime (378881959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189440976 + 189440977.

It is an arithmetic number, because the mean of its divisors is an integer number (189440977).

Almost surely, 2^378881953 is an apocalyptic number.

It is an amenable number.

378881953 is a deficient number, since it is larger than the sum of its proper divisors (1).

378881953 is an equidigital number, since it uses as much as digits as its factorization.

378881953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The square root of 378881953 is about 19464.8902642681. The cubic root of 378881953 is about 723.6045790299.

The spelling of 378881953 in words is "three hundred seventy-eight million, eight hundred eighty-one thousand, nine hundred fifty-three".