1138887523979 has 2 divisors, whose sum is σ = 1138887523980. Its totient is φ = 1138887523978.

The previous prime is 1138887523927. The next prime is 1138887523993. The reversal of 1138887523979 is 9793257888311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138887523979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138887523919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569443761989 + 569443761990.

It is an arithmetic number, because the mean of its divisors is an integer number (569443761990).

Almost surely, 2^{1138887523979} is an apocalyptic number.

1138887523979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138887523979 is an equidigital number, since it uses as much as digits as its factorization.

1138887523979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 71.

The spelling of 1138887523979 in words is "one trillion, one hundred thirty-eight billion, eight hundred eighty-seven million, five hundred twenty-three thousand, nine hundred seventy-nine".