7484780638 has 16 divisors (see below), whose sum is σ = 12164050800. Its totient is φ = 3440336256.

The previous prime is 7484780629. The next prime is 7484780659. The reversal of 7484780638 is 8360874847.

It is a happy number.

It is a congruent number.

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, 2558313 + ... + 2561236.

It is an arithmetic number, because the mean of its divisors is an integer number (760253175).

Almost surely, 2^7484780638 is an apocalyptic number.

7484780638 is a deficient number, since it is larger than the sum of its proper divisors (4679270162).

7484780638 is a wasteful number, since it uses less digits than its factorization.

7484780638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119611.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The square root of 7484780638 is about 86514.6267286636. The cubic root of 7484780638 is about 1956.1088842424.

The spelling of 7484780638 in words is "seven billion, four hundred eighty-four million, seven hundred eighty thousand, six hundred thirty-eight".