1487715381 has 24 divisors (see below), whose sum is σ = 2204931456. Its totient is φ = 966039360.

The previous prime is 1487715379. The next prime is 1487715391. The reversal of 1487715381 is 1835177841.

1487715381 is a `hidden beast` number, since 1 + 48 + 7 + 71 + 538 + 1 = 666.

1487715381 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1487715381 - 2¹ = 1487715379 is a prime.

It is a super-2 number, since 2×1487715381² = 4426594109727950322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487715391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249076 + ... + 254978.

It is an arithmetic number, because the mean of its divisors is an integer number (91872144).

Almost surely, 2^1487715381 is an apocalyptic number.

It is an amenable number.

1487715381 is a deficient number, since it is larger than the sum of its proper divisors (717216075).

1487715381 is a wasteful number, since it uses less digits than its factorization.

1487715381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633 (or 6630 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The square root of 1487715381 is about 38570.9136656108. The cubic root of 1487715381 is about 1141.5806996510.

The spelling of 1487715381 in words is "one billion, four hundred eighty-seven million, seven hundred fifteen thousand, three hundred eighty-one".