2949857780 has 24 divisors (see below), whose sum is σ = 6195765408. Its totient is φ = 1179740448.

The previous prime is 2949857777. The next prime is 2949857783. The reversal of 2949857780 is 877589492.

It is an interprime number because it is at equal distance from previous prime (2949857777) and next prime (2949857783).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2949857783) 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, 173207 + ... + 189473.

It is an arithmetic number, because the mean of its divisors is an integer number (258156892).

Almost surely, 2^2949857780 is an apocalyptic number.

2949857780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2949857780 is an abundant number, since it is smaller than the sum of its proper divisors (3245907628).

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

2949857780 is a wasteful number, since it uses less digits than its factorization.

2949857780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25343 (or 25341 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The square root of 2949857780 is about 54312.5931989994. The cubic root of 2949857780 is about 1434.1690940980.

It can be divided in two parts, 29498 and 57780, that added together give a palindrome (87278).

The spelling of 2949857780 in words is "two billion, nine hundred forty-nine million, eight hundred fifty-seven thousand, seven hundred eighty".