19657093401 has 96 divisors (see below), whose sum is σ = 32346243072. Its totient is φ = 11400238080.

The previous prime is 19657093381. The next prime is 19657093409. The reversal of 19657093401 is 10439075691.

19657093401 is a `hidden beast` number, since 1 + 96 + 5 + 70 + 93 + 401 = 666.

It is not a de Polignac number, because 19657093401 - 2⁵ = 19657093369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19657093409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55685641 + ... + 55685993.

It is an arithmetic number, because the mean of its divisors is an integer number (336940032).

Almost surely, 2^19657093401 is an apocalyptic number.

19657093401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19657093401 is a deficient number, since it is larger than the sum of its proper divisors (12689149671).

19657093401 is a wasteful number, since it uses less digits than its factorization.

19657093401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 19657093401 in words is "nineteen billion, six hundred fifty-seven million, ninety-three thousand, four hundred one".