7478929631 has 2 divisors, whose sum is σ = 7478929632. Its totient is φ = 7478929630.

The previous prime is 7478929589. The next prime is 7478929649. The reversal of 7478929631 is 1369298747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7478929631 - 2³⁰ = 6405187807 is a prime.

It is a super-2 number, since 2×7478929631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7478929681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739464815 + 3739464816.

It is an arithmetic number, because the mean of its divisors is an integer number (3739464816).

Almost surely, 2^7478929631 is an apocalyptic number.

7478929631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478929631 is an equidigital number, since it uses as much as digits as its factorization.

7478929631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 7478929631 is about 86480.8049858464. The cubic root of 7478929631 is about 1955.5990411826.

The spelling of 7478929631 in words is "seven billion, four hundred seventy-eight million, nine hundred twenty-nine thousand, six hundred thirty-one".