3955622138 has 16 divisors (see below), whose sum is σ = 6404626536. Its totient is φ = 1821450240.

The previous prime is 3955622129. The next prime is 3955622147. The reversal of 3955622138 is 8312265593.

3955622138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3955622129) and next prime (3955622147).

It can be written as a sum of positive squares in 4 ways, for example, as 2458473889 + 1497148249 = 49583^2 + 38693^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164423 + ... + 186938.

Almost surely, 2^3955622138 is an apocalyptic number.

3955622138 is a deficient number, since it is larger than the sum of its proper divisors (2449004398).

3955622138 is a wasteful number, since it uses less digits than its factorization.

3955622138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351809.

The product of its digits is 388800, while the sum is 44.

The square root of 3955622138 is about 62893.7368741912. The cubic root of 3955622138 is about 1581.5087519028.

The spelling of 3955622138 in words is "three billion, nine hundred fifty-five million, six hundred twenty-two thousand, one hundred thirty-eight".