19993137 has 8 divisors (see below), whose sum is σ = 27160704. Its totient is φ = 13077168.

The previous prime is 19993097. The next prime is 19993157. The reversal of 19993137 is 73139991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19993137 - 2⁸ = 19992881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19993157) 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, 62713 + ... + 63030.

It is an arithmetic number, because the mean of its divisors is an integer number (3395088).

Almost surely, 2^19993137 is an apocalyptic number.

It is an amenable number.

19993137 is a deficient number, since it is larger than the sum of its proper divisors (7167567).

19993137 is a wasteful number, since it uses less digits than its factorization.

19993137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125799.

The product of its digits is 45927, while the sum is 42.

The square root of 19993137 is about 4471.3685824365. The cubic root of 19993137 is about 271.4107096939.

The spelling of 19993137 in words is "nineteen million, nine hundred ninety-three thousand, one hundred thirty-seven".