93491531644 has 24 divisors (see below), whose sum is σ = 187214237280. Its totient is φ = 40018262016.

The previous prime is 93491531621. The next prime is 93491531647. The reversal of 93491531644 is 44613519439.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93491531647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2040997 + ... + 2086300.

It is an arithmetic number, because the mean of its divisors is an integer number (7800593220).

Almost surely, 2^93491531644 is an apocalyptic number.

It is an amenable number.

93491531644 is an abundant number, since it is smaller than the sum of its proper divisors (93722705636).

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

93491531644 is a wasteful number, since it uses less digits than its factorization.

93491531644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128117 (or 4128115 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

The spelling of 93491531644 in words is "ninety-three billion, four hundred ninety-one million, five hundred thirty-one thousand, six hundred forty-four".