1187136001 has 12 divisors (see below), whose sum is σ = 1208888832. Its totient is φ = 1165759776.

The previous prime is 1187135981. The next prime is 1187136031. The reversal of 1187136001 is 1006317811.

It is not a de Polignac number, because 1187136001 - 2²⁹ = 650265089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187136031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1955440 + ... + 1956046.

It is an arithmetic number, because the mean of its divisors is an integer number (100740736).

Almost surely, 2^1187136001 is an apocalyptic number.

It is an amenable number.

1187136001 is a deficient number, since it is larger than the sum of its proper divisors (21752831).

1187136001 is an frugal number, since it uses more digits than its factorization.

1187136001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1187136001 is about 34454.8400228473. The cubic root of 1187136001 is about 1058.8476860207.

The spelling of 1187136001 in words is "one billion, one hundred eighty-seven million, one hundred thirty-six thousand, one".