1139987519 has 8 divisors (see below), whose sum is σ = 1251545808. Its totient is φ = 1029749760.

The previous prime is 1139987507. The next prime is 1139987531. The reversal of 1139987519 is 9157899311.

It is an interprime number because it is at equal distance from previous prime (1139987507) and next prime (1139987531).

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 1139987519 - 2⁸ = 1139987263 is a prime.

It is a super-2 number, since 2×1139987519² = 2599143086951550722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139987579) 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, 328322 + ... + 331775.

It is an arithmetic number, because the mean of its divisors is an integer number (156443226).

Almost surely, 2^1139987519 is an apocalyptic number.

1139987519 is a deficient number, since it is larger than the sum of its proper divisors (111558289).

1139987519 is a wasteful number, since it uses less digits than its factorization.

1139987519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660265.

The product of its digits is 612360, while the sum is 53.

The square root of 1139987519 is about 33763.7012041038. The cubic root of 1139987519 is about 1044.6401144690.

The spelling of 1139987519 in words is "one billion, one hundred thirty-nine million, nine hundred eighty-seven thousand, five hundred nineteen".