378078277 has 4 divisors (see below), whose sum is σ = 378188416. Its totient is φ = 377968140.

The previous prime is 378078271. The next prime is 378078329. The reversal of 378078277 is 772870873.

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 a de Polignac number, because none of the positive numbers 2^k-378078277 is a prime.

It is a super-3 number, since 3×378078277³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378078277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378078271) 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, 49749 + ... + 56842.

It is an arithmetic number, because the mean of its divisors is an integer number (94547104).

Almost surely, 2^378078277 is an apocalyptic number.

It is an amenable number.

378078277 is a deficient number, since it is larger than the sum of its proper divisors (110139).

378078277 is a wasteful number, since it uses less digits than its factorization.

378078277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110138.

The product of its (nonzero) digits is 921984, while the sum is 49.

The square root of 378078277 is about 19444.2350582377. The cubic root of 378078277 is about 723.0925855184.

The spelling of 378078277 in words is "three hundred seventy-eight million, seventy-eight thousand, two hundred seventy-seven".