1187089449 has 16 divisors (see below), whose sum is σ = 1948044672. Its totient is φ = 626156928.

The previous prime is 1187089349. The next prime is 1187089457. The reversal of 1187089449 is 9449807811.

It is not a de Polignac number, because 1187089449 - 2¹¹ = 1187087401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1187089459) 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, 2173884 + ... + 2174429.

It is an arithmetic number, because the mean of its divisors is an integer number (121752792).

Almost surely, 2^1187089449 is an apocalyptic number.

It is an amenable number.

1187089449 is a deficient number, since it is larger than the sum of its proper divisors (760955223).

1187089449 is a wasteful number, since it uses less digits than its factorization.

1187089449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348336.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 1187089449 is about 34454.1644652718. The cubic root of 1187089449 is about 1058.8338453931.

The spelling of 1187089449 in words is "one billion, one hundred eighty-seven million, eighty-nine thousand, four hundred forty-nine".