7640139803 has 2 divisors, whose sum is σ = 7640139804. Its totient is φ = 7640139802.

The previous prime is 7640139769. The next prime is 7640139809. The reversal of 7640139803 is 3089310467.

It is a strong prime.

It is an emirp because it is prime and its reverse (3089310467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7640139803 - 2⁶ = 7640139739 is a prime.

It is not a weakly prime, because it can be changed into another prime (7640139809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820069901 + 3820069902.

It is an arithmetic number, because the mean of its divisors is an integer number (3820069902).

Almost surely, 2^7640139803 is an apocalyptic number.

7640139803 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640139803 is an equidigital number, since it uses as much as digits as its factorization.

7640139803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 7640139803 is about 87407.8932534128. The cubic root of 7640139803 is about 1969.5504142955.

The spelling of 7640139803 in words is "seven billion, six hundred forty million, one hundred thirty-nine thousand, eight hundred three".