2651280388 has 6 divisors (see below), whose sum is σ = 4639740686. Its totient is φ = 1325640192.

The previous prime is 2651280361. The next prime is 2651280389. The reversal of 2651280388 is 8830821562.

It can be written as a sum of positive squares in only one way, i.e., 2517831684 + 133448704 = 50178^2 + 11552^2 .

It is not an unprimeable number, because it can be changed into a prime (2651280389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331410045 + ... + 331410052.

Almost surely, 2^2651280388 is an apocalyptic number.

It is an amenable number.

2651280388 is a deficient number, since it is larger than the sum of its proper divisors (1988460298).

2651280388 is a wasteful number, since it uses less digits than its factorization.

2651280388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662820101 (or 662820099 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 2651280388 is about 51490.5854307368. The cubic root of 2651280388 is about 1384.0503402285.

The spelling of 2651280388 in words is "two billion, six hundred fifty-one million, two hundred eighty thousand, three hundred eighty-eight".