378146933 has 4 divisors (see below), whose sum is σ = 394588128. Its totient is φ = 361705740.

The previous prime is 378146927. The next prime is 378146947. The reversal of 378146933 is 339641873.

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.

It is a cyclic number.

It is not a de Polignac number, because 378146933 - 2⁴ = 378146917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378146983) 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, 8220563 + ... + 8220608.

It is an arithmetic number, because the mean of its divisors is an integer number (98647032).

Almost surely, 2^378146933 is an apocalyptic number.

It is an amenable number.

378146933 is a deficient number, since it is larger than the sum of its proper divisors (16441195).

378146933 is a wasteful number, since it uses less digits than its factorization.

378146933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16441194.

The product of its digits is 326592, while the sum is 44.

The square root of 378146933 is about 19446.0004371079. Note that the first 3 decimals coincide. The cubic root of 378146933 is about 723.1363521516.

The spelling of 378146933 in words is "three hundred seventy-eight million, one hundred forty-six thousand, nine hundred thirty-three".