2114387781 has 16 divisors (see below), whose sum is σ = 3085190208. Its totient is φ = 1277398400.

The previous prime is 2114387749. The next prime is 2114387783. The reversal of 2114387781 is 1877834112.

It is a cyclic number.

It is not a de Polignac number, because 2114387781 - 2⁵ = 2114387749 is a prime.

It is a super-2 number, since 2×2114387781² = 8941271376884207922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2114387783) 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 15 ways as a sum of consecutive naturals, for example, 90600 + ... + 111521.

It is an arithmetic number, because the mean of its divisors is an integer number (192824388).

Almost surely, 2^2114387781 is an apocalyptic number.

It is an amenable number.

2114387781 is a deficient number, since it is larger than the sum of its proper divisors (970802427).

2114387781 is a wasteful number, since it uses less digits than its factorization.

2114387781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202452.

The product of its digits is 75264, while the sum is 42.

The square root of 2114387781 is about 45982.4725411759. The cubic root of 2114387781 is about 1283.4970656484.

The spelling of 2114387781 in words is "two billion, one hundred fourteen million, three hundred eighty-seven thousand, seven hundred eighty-one".