378952081 has 4 divisors (see below), whose sum is σ = 378999792. Its totient is φ = 378904372.

The previous prime is 378952051. The next prime is 378952087. The reversal of 378952081 is 180259873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 378952081 - 2²⁵ = 345397649 is a prime.

It is a super-2 number, since 2×378952081² = 287209359388461122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378952087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8755 + ... + 28888.

It is an arithmetic number, because the mean of its divisors is an integer number (94749948).

Almost surely, 2^378952081 is an apocalyptic number.

It is an amenable number.

378952081 is a deficient number, since it is larger than the sum of its proper divisors (47711).

378952081 is a wasteful number, since it uses less digits than its factorization.

378952081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47710.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 378952081 is about 19466.6915781804. The cubic root of 378952081 is about 723.6492207370.

The spelling of 378952081 in words is "three hundred seventy-eight million, nine hundred fifty-two thousand, eighty-one".