1173938486987 has 16 divisors (see below), whose sum is σ = 1345784524800. Its totient is φ = 1003129028352.

The previous prime is 1173938486971. The next prime is 1173938486993. The reversal of 1173938486987 is 7896848393711.

It is a cyclic number.

It is not a de Polignac number, because 1173938486987 - 2⁴ = 1173938486971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173938486947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10070678 + ... + 10186580.

It is an arithmetic number, because the mean of its divisors is an integer number (84111532800).

Almost surely, 2^{1173938486987} is an apocalyptic number.

1173938486987 is a deficient number, since it is larger than the sum of its proper divisors (171846037813).

1173938486987 is a wasteful number, since it uses less digits than its factorization.

1173938486987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120362.

The product of its digits is 438939648, while the sum is 74.

The spelling of 1173938486987 in words is "one trillion, one hundred seventy-three billion, nine hundred thirty-eight million, four hundred eighty-six thousand, nine hundred eighty-seven".