378761641 has 4 divisors (see below), whose sum is σ = 384096384. Its totient is φ = 373426900.

The previous prime is 378761639. The next prime is 378761657. The reversal of 378761641 is 146167873.

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 378761641 - 2¹ = 378761639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378761611) 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, 2667265 + ... + 2667406.

It is an arithmetic number, because the mean of its divisors is an integer number (96024096).

Almost surely, 2^378761641 is an apocalyptic number.

It is an amenable number.

378761641 is a deficient number, since it is larger than the sum of its proper divisors (5334743).

378761641 is an equidigital number, since it uses as much as digits as its factorization.

378761641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334742.

The product of its digits is 169344, while the sum is 43.

The square root of 378761641 is about 19461.7995313897. The cubic root of 378761641 is about 723.5279786271.

It can be divided in two parts, 37 and 8761641, that added together give a palindrome (8761678).

The spelling of 378761641 in words is "three hundred seventy-eight million, seven hundred sixty-one thousand, six hundred forty-one".