1187244109747 has 2 divisors, whose sum is σ = 1187244109748. Its totient is φ = 1187244109746.

The previous prime is 1187244109721. The next prime is 1187244109757. The reversal of 1187244109747 is 7479014427811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1187244109747 - 2¹⁹ = 1187243585459 is a prime.

It is a super-2 number, since 2×1187244109747² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1187244109757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593622054873 + 593622054874.

It is an arithmetic number, because the mean of its divisors is an integer number (593622054874).

Almost surely, 2^{1187244109747} is an apocalyptic number.

1187244109747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187244109747 is an equidigital number, since it uses as much as digits as its factorization.

1187244109747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 1187244109747 in words is "one trillion, one hundred eighty-seven billion, two hundred forty-four million, one hundred nine thousand, seven hundred forty-seven".