378691953 has 8 divisors (see below), whose sum is σ = 511839648. Its totient is φ = 249002784.

The previous prime is 378691931. The next prime is 378691967. The reversal of 378691953 is 359196873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378691953 - 2⁵ = 378691921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378691896 and 378691905.

It is not an unprimeable number, because it can be changed into a prime (378691853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864375 + ... + 864812.

It is an arithmetic number, because the mean of its divisors is an integer number (63979956).

Almost surely, 2^378691953 is an apocalyptic number.

It is an amenable number.

378691953 is a deficient number, since it is larger than the sum of its proper divisors (133147695).

378691953 is a wasteful number, since it uses less digits than its factorization.

378691953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729263.

The product of its digits is 1224720, while the sum is 51.

The square root of 378691953 is about 19460.0090698848. The cubic root of 378691953 is about 723.4836021601.

The spelling of 378691953 in words is "three hundred seventy-eight million, six hundred ninety-one thousand, nine hundred fifty-three".