1487891455 has 16 divisors (see below), whose sum is σ = 1830314880. Its totient is φ = 1160607232.

The previous prime is 1487891401. The next prime is 1487891473. The reversal of 1487891455 is 5541987841.

It is a cyclic number.

It is not a de Polignac number, because 1487891455 - 2²³ = 1479502847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51447 + ... + 74983.

It is an arithmetic number, because the mean of its divisors is an integer number (114394680).

Almost surely, 2^1487891455 is an apocalyptic number.

1487891455 is a deficient number, since it is larger than the sum of its proper divisors (342423425).

1487891455 is a wasteful number, since it uses less digits than its factorization.

1487891455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23858.

The product of its digits is 1612800, while the sum is 52.

The square root of 1487891455 is about 38573.1960692914. The cubic root of 1487891455 is about 1141.6257339709.

The spelling of 1487891455 in words is "one billion, four hundred eighty-seven million, eight hundred ninety-one thousand, four hundred fifty-five".