838601631 has 36 divisors (see below), whose sum is σ = 1411124832. Its totient is φ = 478505664.

The previous prime is 838601629. The next prime is 838601657. The reversal of 838601631 is 136106838.

It is not a de Polignac number, because 838601631 - 2¹ = 838601629 is a prime.

It is a super-2 number, since 2×838601631² = 1406505391031720322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838601531) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 584491 + ... + 585923.

It is an arithmetic number, because the mean of its divisors is an integer number (39197912).

Almost surely, 2^838601631 is an apocalyptic number.

838601631 is a deficient number, since it is larger than the sum of its proper divisors (572523201).

838601631 is a wasteful number, since it uses less digits than its factorization.

838601631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 838601631 is about 28958.6192868376. The cubic root of 838601631 is about 943.0149277160.

It can be divided in two parts, 83860 and 1631, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 838601631 in words is "eight hundred thirty-eight million, six hundred one thousand, six hundred thirty-one".