2961278380 has 24 divisors (see below), whose sum is σ = 6225549120. Its totient is φ = 1183203840.

The previous prime is 2961278357. The next prime is 2961278401. The reversal of 2961278380 is 838721692.

It is a super-3 number, since 3×2961278380³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2961278380.

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, 63045 + ... + 99484.

It is an arithmetic number, because the mean of its divisors is an integer number (259397880).

Almost surely, 2^2961278380 is an apocalyptic number.

2961278380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2961278380 is an abundant number, since it is smaller than the sum of its proper divisors (3264270740).

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

2961278380 is a wasteful number, since it uses less digits than its factorization.

2961278380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163449 (or 163447 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2961278380 is about 54417.6293125674. The cubic root of 2961278380 is about 1436.0175424543.

The spelling of 2961278380 in words is "two billion, nine hundred sixty-one million, two hundred seventy-eight thousand, three hundred eighty".