11937493639 has 2 divisors, whose sum is σ = 11937493640. Its totient is φ = 11937493638.

The previous prime is 11937493583. The next prime is 11937493657. The reversal of 11937493639 is 93639473911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11937493639 - 2²⁵ = 11903939207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11937493639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11937493739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5968746819 + 5968746820.

It is an arithmetic number, because the mean of its divisors is an integer number (5968746820).

Almost surely, 2^11937493639 is an apocalyptic number.

11937493639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11937493639 is an equidigital number, since it uses as much as digits as its factorization.

11937493639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744, while the sum is 55.

The spelling of 11937493639 in words is "eleven billion, nine hundred thirty-seven million, four hundred ninety-three thousand, six hundred thirty-nine".