378834567619 has 2 divisors, whose sum is σ = 378834567620. Its totient is φ = 378834567618.

The previous prime is 378834567571. The next prime is 378834567649. The reversal of 378834567619 is 916765438873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378834567619 - 2⁹ = 378834567107 is a prime.

It is a super-2 number, since 2×378834567619² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378834567649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189417283809 + 189417283810.

It is an arithmetic number, because the mean of its divisors is an integer number (189417283810).

Almost surely, 2^378834567619 is an apocalyptic number.

378834567619 is a deficient number, since it is larger than the sum of its proper divisors (1).

378834567619 is an equidigital number, since it uses as much as digits as its factorization.

378834567619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 67.

The spelling of 378834567619 in words is "three hundred seventy-eight billion, eight hundred thirty-four million, five hundred sixty-seven thousand, six hundred nineteen".