13992043491 has 64 divisors (see below), whose sum is σ = 22159872000. Its totient is φ = 8705207808.

The previous prime is 13992043489. The next prime is 13992043553. The reversal of 13992043491 is 19434029931.

13992043491 is a `hidden beast` number, since 1 + 39 + 92 + 0 + 43 + 491 = 666.

It is not a de Polignac number, because 13992043491 - 2¹ = 13992043489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13992043451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13337935 + ... + 13338983.

It is an arithmetic number, because the mean of its divisors is an integer number (346248000).

Almost surely, 2^13992043491 is an apocalyptic number.

13992043491 is a deficient number, since it is larger than the sum of its proper divisors (8167828509).

13992043491 is a wasteful number, since it uses less digits than its factorization.

13992043491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 13992043491 in words is "thirteen billion, nine hundred ninety-two million, forty-three thousand, four hundred ninety-one".