1119521987 has 8 divisors (see below), whose sum is σ = 1199770656. Its totient is φ = 1041904512.

The previous prime is 1119521983. The next prime is 1119521993. The reversal of 1119521987 is 7891259111.

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 1119521987 - 2² = 1119521983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1119521983) 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, 656918 + ... + 658619.

It is an arithmetic number, because the mean of its divisors is an integer number (149971332).

Almost surely, 2^1119521987 is an apocalyptic number.

1119521987 is a deficient number, since it is larger than the sum of its proper divisors (80248669).

1119521987 is a wasteful number, since it uses less digits than its factorization.

1119521987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315597.

The product of its digits is 45360, while the sum is 44.

The square root of 1119521987 is about 33459.2586140219. The cubic root of 1119521987 is about 1038.3510565082.

The spelling of 1119521987 in words is "one billion, one hundred nineteen million, five hundred twenty-one thousand, nine hundred eighty-seven".