13867901487 has 32 divisors (see below), whose sum is σ = 23731176960. Its totient is φ = 7910386560.

The previous prime is 13867901449. The next prime is 13867901519. The reversal of 13867901487 is 78410976831.

13867901487 is a `hidden beast` number, since 13 + 8 + 67 + 90 + 1 + 487 = 666.

It is not a de Polignac number, because 13867901487 - 2⁸ = 13867901231 is a prime.

It is a super-2 number, since 2×13867901487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13867901417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1368283 + ... + 1378380.

It is an arithmetic number, because the mean of its divisors is an integer number (741599280).

Almost surely, 2^13867901487 is an apocalyptic number.

13867901487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13867901487 is a deficient number, since it is larger than the sum of its proper divisors (9863275473).

13867901487 is a wasteful number, since it uses less digits than its factorization.

13867901487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746700 (or 2746694 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 13867901487 in words is "thirteen billion, eight hundred sixty-seven million, nine hundred one thousand, four hundred eighty-seven".