1993848631 has 2 divisors, whose sum is σ = 1993848632. Its totient is φ = 1993848630.

The previous prime is 1993848613. The next prime is 1993848683. The reversal of 1993848631 is 1368483991.

It is a happy number.

Together with previous prime (1993848613) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (1993848683) can be obtained adding 1993848631 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1993848631 - 2⁷ = 1993848503 is a prime.

It is a super-2 number, since 2×1993848631² = 7950864726681148322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993848611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996924315 + 996924316.

It is an arithmetic number, because the mean of its divisors is an integer number (996924316).

Almost surely, 2^1993848631 is an apocalyptic number.

1993848631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993848631 is an equidigital number, since it uses as much as digits as its factorization.

1993848631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 1993848631 is about 44652.5321902353. The cubic root of 1993848631 is about 1258.6280167853.

The spelling of 1993848631 in words is "one billion, nine hundred ninety-three million, eight hundred forty-eight thousand, six hundred thirty-one".