1968203631 has 16 divisors (see below), whose sum is σ = 2684118528. Its totient is φ = 1282296000.

The previous prime is 1968203617. The next prime is 1968203663. The reversal of 1968203631 is 1363028691.

It is not a de Polignac number, because 1968203631 - 2⁵ = 1968203599 is a prime.

It is a super-2 number, since 2×1968203631² = 7747651066163168322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1968203631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968203681) 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, 87331 + ... + 107531.

It is an arithmetic number, because the mean of its divisors is an integer number (167757408).

Almost surely, 2^1968203631 is an apocalyptic number.

1968203631 is a deficient number, since it is larger than the sum of its proper divisors (715914897).

1968203631 is a wasteful number, since it uses less digits than its factorization.

1968203631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20942.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1968203631 is about 44364.4410648889. The cubic root of 1968203631 is about 1253.2085318256.

The spelling of 1968203631 in words is "one billion, nine hundred sixty-eight million, two hundred three thousand, six hundred thirty-one".