1993432039 has 4 divisors (see below), whose sum is σ = 2023184824. Its totient is φ = 1963679256.

The previous prime is 1993432033. The next prime is 1993432061. The reversal of 1993432039 is 9302343991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9302343991 = 89 ⋅104520719.

It is a cyclic number.

It is not a de Polignac number, because 1993432039 - 2⁹ = 1993431527 is a prime.

It is a super-2 number, since 2×1993432039² = 7947542588223395042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1993431986 and 1993432004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993432033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14876292 + ... + 14876425.

It is an arithmetic number, because the mean of its divisors is an integer number (505796206).

Almost surely, 2^1993432039 is an apocalyptic number.

1993432039 is a deficient number, since it is larger than the sum of its proper divisors (29752785).

1993432039 is an equidigital number, since it uses as much as digits as its factorization.

1993432039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29752784.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 1993432039 is about 44647.8671271092. The cubic root of 1993432039 is about 1258.5403520086.

The spelling of 1993432039 in words is "one billion, nine hundred ninety-three million, four hundred thirty-two thousand, thirty-nine".