7914881287 has 4 divisors (see below), whose sum is σ = 7916379120. Its totient is φ = 7913383456.

The previous prime is 7914881239. The next prime is 7914881291. The reversal of 7914881287 is 7821884197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7821884197 = 87149 ⋅89753.

It is a cyclic number.

It is not a de Polignac number, because 7914881287 - 2²³ = 7906492679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7914801287) 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, 740962 + ... + 751567.

It is an arithmetic number, because the mean of its divisors is an integer number (1979094780).

Almost surely, 2^7914881287 is an apocalyptic number.

7914881287 is a deficient number, since it is larger than the sum of its proper divisors (1497833).

7914881287 is a wasteful number, since it uses less digits than its factorization.

7914881287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497832.

The product of its digits is 1806336, while the sum is 55.

The square root of 7914881287 is about 88965.6185669498. The cubic root of 7914881287 is about 1992.8814672223.

The spelling of 7914881287 in words is "seven billion, nine hundred fourteen million, eight hundred eighty-one thousand, two hundred eighty-seven".