1993232639 has 16 divisors (see below), whose sum is σ = 2141877600. Its totient is φ = 1849101696.

The previous prime is 1993232627. The next prime is 1993232653. The reversal of 1993232639 is 9362323991.

It is a cyclic number.

It is not a de Polignac number, because 1993232639 - 2⁸ = 1993232383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1993232593 and 1993232602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993232239) 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, 615677 + ... + 618905.

It is an arithmetic number, because the mean of its divisors is an integer number (133867350).

Almost surely, 2^1993232639 is an apocalyptic number.

1993232639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1993232639 is a deficient number, since it is larger than the sum of its proper divisors (148644961).

1993232639 is a wasteful number, since it uses less digits than its factorization.

1993232639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914.

The product of its digits is 472392, while the sum is 47.

The square root of 1993232639 is about 44645.6340418635. The cubic root of 1993232639 is about 1258.4983873117.

The spelling of 1993232639 in words is "one billion, nine hundred ninety-three million, two hundred thirty-two thousand, six hundred thirty-nine".