378272731 has 2 divisors, whose sum is σ = 378272732. Its totient is φ = 378272730.

The previous prime is 378272717. The next prime is 378272737. The reversal of 378272731 is 137272873.

It is a strong prime.

It is an emirp because it is prime and its reverse (137272873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378272731 - 2¹³ = 378264539 is a prime.

It is a super-2 number, since 2×378272731² = 286180518036396722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378272737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189136365 + 189136366.

It is an arithmetic number, because the mean of its divisors is an integer number (189136366).

Almost surely, 2^378272731 is an apocalyptic number.

378272731 is a deficient number, since it is larger than the sum of its proper divisors (1).

378272731 is an equidigital number, since it uses as much as digits as its factorization.

378272731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 40.

The square root of 378272731 is about 19449.2347150216. The cubic root of 378272731 is about 723.2165317619.

The spelling of 378272731 in words is "three hundred seventy-eight million, two hundred seventy-two thousand, seven hundred thirty-one".