7138679634 has 16 divisors (see below), whose sum is σ = 15863732640. Its totient is φ = 2379559860.

The previous prime is 7138679633. The next prime is 7138679663. The reversal of 7138679634 is 4369768317.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 132197771 = 7138679634 / (7 + 1 + 3 + 8 + 6 + 7 + 9 + 6 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (7138679633) 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, 66098832 + ... + 66098939.

It is an arithmetic number, because the mean of its divisors is an integer number (991483290).

Almost surely, 2^7138679634 is an apocalyptic number.

7138679634 is an abundant number, since it is smaller than the sum of its proper divisors (8725053006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7138679634 is a wasteful number, since it uses less digits than its factorization.

7138679634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132197782 (or 132197776 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 7138679634 is about 84490.7073825282. The cubic root of 7138679634 is about 1925.4812657606.

The spelling of 7138679634 in words is "seven billion, one hundred thirty-eight million, six hundred seventy-nine thousand, six hundred thirty-four".