1145481987 has 8 divisors (see below), whose sum is σ = 1644794704. Its totient is φ = 704911968.

The previous prime is 1145481983. The next prime is 1145482007. The reversal of 1145481987 is 7891845411.

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

It is not a de Polignac number, because 1145481987 - 2² = 1145481983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145481983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14685628 + ... + 14685705.

It is an arithmetic number, because the mean of its divisors is an integer number (205599338).

Almost surely, 2^1145481987 is an apocalyptic number.

1145481987 is a deficient number, since it is larger than the sum of its proper divisors (499312717).

1145481987 is a wasteful number, since it uses less digits than its factorization.

1145481987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29371349.

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

The square root of 1145481987 is about 33844.9698921420. The cubic root of 1145481987 is about 1046.3157307373.

The spelling of 1145481987 in words is "one billion, one hundred forty-five million, four hundred eighty-one thousand, nine hundred eighty-seven".