1187001049 has 8 divisors (see below), whose sum is σ = 1278704000. Its totient is φ = 1095354576.

The previous prime is 1187001031. The next prime is 1187001131. The reversal of 1187001049 is 9401007811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187001049 - 2¹⁵ = 1186968281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1187001049.

It is not an unprimeable number, because it can be changed into a prime (1187001449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36202 + ... + 60700.

It is an arithmetic number, because the mean of its divisors is an integer number (159838000).

Almost surely, 2^1187001049 is an apocalyptic number.

It is an amenable number.

1187001049 is a deficient number, since it is larger than the sum of its proper divisors (91702951).

1187001049 is a wasteful number, since it uses less digits than its factorization.

1187001049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28239.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 1187001049 is about 34452.8815775981. The cubic root of 1187001049 is about 1058.8075617137.

The spelling of 1187001049 in words is "one billion, one hundred eighty-seven million, one thousand, forty-nine".