1187717049 has 12 divisors (see below), whose sum is σ = 1715890176. Its totient is φ = 791673432.

The previous prime is 1187717029. The next prime is 1187717059. The reversal of 1187717049 is 9407177811.

It is not a de Polignac number, because 1187717049 - 2⁷ = 1187716921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1187716995 and 1187717013.

It is not an unprimeable number, because it can be changed into a prime (1187717009) 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, 93832 + ... + 105734.

It is an arithmetic number, because the mean of its divisors is an integer number (142990848).

Almost surely, 2^1187717049 is an apocalyptic number.

It is an amenable number.

1187717049 is a deficient number, since it is larger than the sum of its proper divisors (528173127).

1187717049 is a wasteful number, since it uses less digits than its factorization.

1187717049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22996 (or 22993 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 45.

The square root of 1187717049 is about 34463.2710142261. The cubic root of 1187717049 is about 1059.0204101174.

The spelling of 1187717049 in words is "one billion, one hundred eighty-seven million, seven hundred seventeen thousand, forty-nine".