1149481587 has 16 divisors (see below), whose sum is σ = 1547294112. Its totient is φ = 759029760.

The previous prime is 1149481561. The next prime is 1149481591. The reversal of 1149481587 is 7851849411.

It is not a de Polignac number, because 1149481587 - 2¹⁴ = 1149465203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1149481507) 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, 135433 + ... + 143669.

It is an arithmetic number, because the mean of its divisors is an integer number (96705882).

Almost surely, 2^1149481587 is an apocalyptic number.

1149481587 is a deficient number, since it is larger than the sum of its proper divisors (397812525).

1149481587 is a wasteful number, since it uses less digits than its factorization.

1149481587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678.

The product of its digits is 322560, while the sum is 48.

The square root of 1149481587 is about 33904.0054713304. The cubic root of 1149481587 is about 1047.5320988183.

The spelling of 1149481587 in words is "one billion, one hundred forty-nine million, four hundred eighty-one thousand, five hundred eighty-seven".