3640277238 has 48 divisors (see below), whose sum is σ = 8138059776. Its totient is φ = 1083944160.

The previous prime is 3640277231. The next prime is 3640277239. The reversal of 3640277238 is 8327720463.

It is a self number, because there is not a number n which added to its sum of digits gives 3640277238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640277231) 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 23 ways as a sum of consecutive naturals, for example, 26470 + ... + 89337.

It is an arithmetic number, because the mean of its divisors is an integer number (169542912).

Almost surely, 2^3640277238 is an apocalyptic number.

3640277238 is an abundant number, since it is smaller than the sum of its proper divisors (4497782538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3640277238 is a wasteful number, since it uses less digits than its factorization.

3640277238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115869 (or 115856 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 3640277238 is about 60334.7100597989. The cubic root of 3640277238 is about 1538.3133890601.

The spelling of 3640277238 in words is "three billion, six hundred forty million, two hundred seventy-seven thousand, two hundred thirty-eight".