1187164339563 has 4 divisors (see below), whose sum is σ = 1582885786088. Its totient is φ = 791442893040.

The previous prime is 1187164339561. The next prime is 1187164339579. The reversal of 1187164339563 is 3659334617811.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1187164339563 - 2¹ = 1187164339561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187164339561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197860723258 + ... + 197860723263.

It is an arithmetic number, because the mean of its divisors is an integer number (395721446522).

Almost surely, 2^{1187164339563} is an apocalyptic number.

1187164339563 is a deficient number, since it is larger than the sum of its proper divisors (395721446525).

1187164339563 is an equidigital number, since it uses as much as digits as its factorization.

1187164339563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395721446524.

The product of its digits is 9797760, while the sum is 57.

The spelling of 1187164339563 in words is "one trillion, one hundred eighty-seven billion, one hundred sixty-four million, three hundred thirty-nine thousand, five hundred sixty-three".