378271493 has 4 divisors (see below), whose sum is σ = 378389388. Its totient is φ = 378153600.

The previous prime is 378271483. The next prime is 378271507. The reversal of 378271493 is 394172873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241895809 + 136375684 = 15553^2 + 11678^2 .

It is a cyclic number.

It is not a de Polignac number, because 378271493 - 2¹⁴ = 378255109 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 (378271433) 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, 53996 + ... + 60597.

It is an arithmetic number, because the mean of its divisors is an integer number (94597347).

Almost surely, 2^378271493 is an apocalyptic number.

It is an amenable number.

378271493 is a deficient number, since it is larger than the sum of its proper divisors (117895).

378271493 is a wasteful number, since it uses less digits than its factorization.

378271493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117894.

The product of its digits is 254016, while the sum is 44.

The square root of 378271493 is about 19449.2028885505. The cubic root of 378271493 is about 723.2157427870.

The spelling of 378271493 in words is "three hundred seventy-eight million, two hundred seventy-one thousand, four hundred ninety-three".