2778790379 has 8 divisors (see below), whose sum is σ = 2900136960. Its totient is φ = 2657487976.

The previous prime is 2778790367. The next prime is 2778790381. The reversal of 2778790379 is 9730978772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2778790379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2778790349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225824 + ... + 237810.

It is an arithmetic number, because the mean of its divisors is an integer number (362517120).

Almost surely, 2^2778790379 is an apocalyptic number.

2778790379 is a deficient number, since it is larger than the sum of its proper divisors (121346581).

2778790379 is a wasteful number, since it uses less digits than its factorization.

2778790379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22089.

The product of its (nonzero) digits is 9335088, while the sum is 59.

The square root of 2778790379 is about 52714.2331728348. The cubic root of 2778790379 is about 1405.8919002742.

The spelling of 2778790379 in words is "two billion, seven hundred seventy-eight million, seven hundred ninety thousand, three hundred seventy-nine".