2780823954 has 16 divisors (see below), whose sum is σ = 5572329120. Its totient is φ = 925161120.

The previous prime is 2780823919. The next prime is 2780823961. The reversal of 2780823954 is 4593280872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441664 + ... + 447915.

It is an arithmetic number, because the mean of its divisors is an integer number (348270570).

Almost surely, 2^2780823954 is an apocalyptic number.

2780823954 is an abundant number, since it is smaller than the sum of its proper divisors (2791505166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2780823954 is a wasteful number, since it uses less digits than its factorization.

2780823954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890105.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 2780823954 is about 52733.5183161526. The cubic root of 2780823954 is about 1406.2347700237.

The spelling of 2780823954 in words is "two billion, seven hundred eighty million, eight hundred twenty-three thousand, nine hundred fifty-four".