1487887841 has 4 divisors (see below), whose sum is σ = 1623150384. Its totient is φ = 1352625300.

The previous prime is 1487887829. The next prime is 1487887859.

1487887841 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1487887841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1487887801) 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, 67631255 + ... + 67631276.

It is an arithmetic number, because the mean of its divisors is an integer number (405787596).

Almost surely, 2^1487887841 is an apocalyptic number.

1487887841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1487887841 is a deficient number, since it is larger than the sum of its proper divisors (135262543).

1487887841 is a wasteful number, since it uses less digits than its factorization.

1487887841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135262542.

The product of its digits is 3211264, while the sum is 56.

The square root of 1487887841 is about 38573.1492232615. The cubic root of 1487887841 is about 1141.6248096564.

The spelling of 1487887841 in words is "one billion, four hundred eighty-seven million, eight hundred eighty-seven thousand, eight hundred forty-one".