6340236381 has 24 divisors (see below), whose sum is σ = 9235992480. Its totient is φ = 4190940000.

The previous prime is 6340236341. The next prime is 6340236421. The reversal of 6340236381 is 1836320436.

6340236381 is a `hidden beast` number, since 6 + 3 + 40 + 236 + 381 = 666.

It is an interprime number because it is at equal distance from previous prime (6340236341) and next prime (6340236421).

It is not a de Polignac number, because 6340236381 - 2¹³ = 6340228189 is a prime.

It is a super-2 number, since 2×6340236381² = 80397194733911954322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340236311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2652735 + ... + 2655123.

It is an arithmetic number, because the mean of its divisors is an integer number (384833020).

Almost surely, 2^6340236381 is an apocalyptic number.

It is an amenable number.

6340236381 is a deficient number, since it is larger than the sum of its proper divisors (2895756099).

6340236381 is a wasteful number, since it uses less digits than its factorization.

6340236381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777 (or 4774 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 6340236381 is about 79625.6012912932. The cubic root of 6340236381 is about 1850.8383228588.

The spelling of 6340236381 in words is "six billion, three hundred forty million, two hundred thirty-six thousand, three hundred eighty-one".