7640388103 has 4 divisors (see below), whose sum is σ = 7802949600. Its totient is φ = 7477826608.

The previous prime is 7640388083. The next prime is 7640388157. The reversal of 7640388103 is 3018830467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3018830467 = 19541 ⋅154487.

It is a cyclic number.

It is not a de Polignac number, because 7640388103 - 2²¹ = 7638290951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640388163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81280678 + ... + 81280771.

It is an arithmetic number, because the mean of its divisors is an integer number (1950737400).

Almost surely, 2^7640388103 is an apocalyptic number.

7640388103 is a deficient number, since it is larger than the sum of its proper divisors (162561497).

7640388103 is a wasteful number, since it uses less digits than its factorization.

7640388103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162561496.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 7640388103 is about 87409.3135941474. The cubic root of 7640388103 is about 1969.5717504701.

The spelling of 7640388103 in words is "seven billion, six hundred forty million, three hundred eighty-eight thousand, one hundred three".