1487971133 has 4 divisors (see below), whose sum is σ = 1623241248. Its totient is φ = 1352701020.

The previous prime is 1487971031. The next prime is 1487971171. The reversal of 1487971133 is 3311797841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3311797841 = 11 ⋅301072531.

It is not a de Polignac number, because 1487971133 - 2²² = 1483776829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487974133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67635041 + ... + 67635062.

It is an arithmetic number, because the mean of its divisors is an integer number (405810312).

Almost surely, 2^1487971133 is an apocalyptic number.

It is an amenable number.

1487971133 is a deficient number, since it is larger than the sum of its proper divisors (135270115).

1487971133 is a wasteful number, since it uses less digits than its factorization.

1487971133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135270114.

The product of its digits is 127008, while the sum is 44.

The square root of 1487971133 is about 38574.2288710999. The cubic root of 1487971133 is about 1141.6461119878.

The spelling of 1487971133 in words is "one billion, four hundred eighty-seven million, nine hundred seventy-one thousand, one hundred thirty-three".