7865381654 has 16 divisors (see below), whose sum is σ = 12722748192. Its totient is φ = 3625281408.

The previous prime is 7865381651. The next prime is 7865381677. The reversal of 7865381654 is 4561835687.

It is a junction number, because it is equal to n+sod(n) for n = 7865381596 and 7865381605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7865381651) 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, 184259 + ... + 222894.

It is an arithmetic number, because the mean of its divisors is an integer number (795171762).

Almost surely, 2^7865381654 is an apocalyptic number.

7865381654 is a deficient number, since it is larger than the sum of its proper divisors (4857366538).

7865381654 is a wasteful number, since it uses less digits than its factorization.

7865381654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407911.

The product of its digits is 4838400, while the sum is 53.

The square root of 7865381654 is about 88686.9869484808. The cubic root of 7865381654 is about 1988.7182856190.

The spelling of 7865381654 in words is "seven billion, eight hundred sixty-five million, three hundred eighty-one thousand, six hundred fifty-four".