19793961 has 24 divisors (see below), whose sum is σ = 32550336. Its totient is φ = 11473440.

The previous prime is 19793947. The next prime is 19793971. The reversal of 19793961 is 16939791.

It is not a de Polignac number, because 19793961 - 2⁵ = 19793929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19793911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2070 + ... + 6623.

It is an arithmetic number, because the mean of its divisors is an integer number (1356264).

Almost surely, 2^19793961 is an apocalyptic number.

19793961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19793961 is a deficient number, since it is larger than the sum of its proper divisors (12756375).

19793961 is a wasteful number, since it uses less digits than its factorization.

19793961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733 (or 8730 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 19793961 is about 4449.0404583460. The cubic root of 19793961 is about 270.5064158206.

The spelling of 19793961 in words is "nineteen million, seven hundred ninety-three thousand, nine hundred sixty-one".