693613918139 has 2 divisors, whose sum is σ = 693613918140. Its totient is φ = 693613918138.

The previous prime is 693613918103. The next prime is 693613918183. The reversal of 693613918139 is 931819316396.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-693613918139 is a prime.

It is a super-2 number, since 2×693613918139² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (693613918639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346806959069 + 346806959070.

It is an arithmetic number, because the mean of its divisors is an integer number (346806959070).

Almost surely, 2^693613918139 is an apocalyptic number.

693613918139 is a deficient number, since it is larger than the sum of its proper divisors (1).

693613918139 is an equidigital number, since it uses as much as digits as its factorization.

693613918139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 59.

The spelling of 693613918139 in words is "six hundred ninety-three billion, six hundred thirteen million, nine hundred eighteen thousand, one hundred thirty-nine".