7865020490 has 16 divisors (see below), whose sum is σ = 14297207400. Its totient is φ = 3114859200.

The previous prime is 7865020481. The next prime is 7865020519. The reversal of 7865020490 is 940205687.

It can be written as a sum of positive squares in 4 ways, for example, as 6807405049 + 1057615441 = 82507^2 + 32521^2 .

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, 3892565 + ... + 3894584.

Almost surely, 2^7865020490 is an apocalyptic number.

7865020490 is a deficient number, since it is larger than the sum of its proper divisors (6432186910).

7865020490 is a wasteful number, since it uses less digits than its factorization.

7865020490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7787257.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 7865020490 is about 88684.9507526502. The cubic root of 7865020490 is about 1988.6878457125.

The spelling of 7865020490 in words is "seven billion, eight hundred sixty-five million, twenty thousand, four hundred ninety".