614388381 has 16 divisors (see below), whose sum is σ = 869854464. Its totient is φ = 384395264.

The previous prime is 614388377. The next prime is 614388409. The reversal of 614388381 is 183883416.

It is a cyclic number.

It is not a de Polignac number, because 614388381 - 2² = 614388377 is a prime.

It is a super-2 number, since 2×614388381² = 754946165415602322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (614388311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 35066.

It is an arithmetic number, because the mean of its divisors is an integer number (54365904).

Almost surely, 2^614388381 is an apocalyptic number.

It is an amenable number.

614388381 is a deficient number, since it is larger than the sum of its proper divisors (255466083).

614388381 is a wasteful number, since it uses less digits than its factorization.

614388381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34500.

The product of its digits is 110592, while the sum is 42.

The square root of 614388381 is about 24786.8590386116. The cubic root of 614388381 is about 850.1214963584.

The spelling of 614388381 in words is "six hundred fourteen million, three hundred eighty-eight thousand, three hundred eighty-one".