7631884394 has 12 divisors (see below), whose sum is σ = 12082056354. Its totient is φ = 3615102792.

The previous prime is 7631884387. The next prime is 7631884397. The reversal of 7631884394 is 4934881367.

It can be written as a sum of positive squares in only one way, i.e., 6758977369 + 872907025 = 82213^2 + 29545^2 .

It is a super-3 number, since 3×7631884394³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7631884397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5284517 + ... + 5285960.

Almost surely, 2^7631884394 is an apocalyptic number.

7631884394 is a deficient number, since it is larger than the sum of its proper divisors (4450171960).

7631884394 is a wasteful number, since it uses less digits than its factorization.

7631884394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570517 (or 10570498 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 7631884394 is about 87360.6570144708. The cubic root of 7631884394 is about 1968.8407717832.

The spelling of 7631884394 in words is "seven billion, six hundred thirty-one million, eight hundred eighty-four thousand, three hundred ninety-four".