14992549891 has 18 divisors (see below), whose sum is σ = 17067380876. Its totient is φ = 13159515600.

The previous prime is 14992549879. The next prime is 14992549907. The reversal of 14992549891 is 19894529941.

It is not a de Polignac number, because 14992549891 - 2²¹ = 14990452739 is a prime.

It is a super-2 number, since 2×14992549891² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14992540891) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28096 + ... + 175426.

Almost surely, 2^14992549891 is an apocalyptic number.

14992549891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14992549891 is a deficient number, since it is larger than the sum of its proper divisors (2074830985).

14992549891 is a wasteful number, since it uses less digits than its factorization.

14992549891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147411 (or 147371 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 61.

The spelling of 14992549891 in words is "fourteen billion, nine hundred ninety-two million, five hundred forty-nine thousand, eight hundred ninety-one".