7638583378 has 16 divisors (see below), whose sum is σ = 12134613240. Its totient is φ = 3593814016.

The previous prime is 7638583367. The next prime is 7638583409. The reversal of 7638583378 is 8733858367.

It can be written as a sum of positive squares in 4 ways, for example, as 7167823569 + 470759809 = 84663^2 + 21697^2 .

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, 143250 + ... + 189202.

Almost surely, 2^7638583378 is an apocalyptic number.

7638583378 is a deficient number, since it is larger than the sum of its proper divisors (4496029862).

7638583378 is a wasteful number, since it uses less digits than its factorization.

7638583378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50861.

The product of its digits is 20321280, while the sum is 58.

The square root of 7638583378 is about 87398.9895708183. The cubic root of 7638583378 is about 1969.4166616955.

The spelling of 7638583378 in words is "seven billion, six hundred thirty-eight million, five hundred eighty-three thousand, three hundred seventy-eight".