378753919 has 2 divisors, whose sum is σ = 378753920. Its totient is φ = 378753918.

The previous prime is 378753911. The next prime is 378753929. The reversal of 378753919 is 919357873.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378753919 - 2³ = 378753911 is a prime.

It is a super-2 number, since 2×378753919² = 286909062315717122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378753911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189376959 + 189376960.

It is an arithmetic number, because the mean of its divisors is an integer number (189376960).

Almost surely, 2^378753919 is an apocalyptic number.

378753919 is a deficient number, since it is larger than the sum of its proper divisors (1).

378753919 is an equidigital number, since it uses as much as digits as its factorization.

378753919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 52.

The square root of 378753919 is about 19461.6011417355. The cubic root of 378753919 is about 723.5230616200.

The spelling of 378753919 in words is "three hundred seventy-eight million, seven hundred fifty-three thousand, nine hundred nineteen".