19464541057 has 16 divisors (see below), whose sum is σ = 21318482752. Its totient is φ = 17661913920.

The previous prime is 19464541043. The next prime is 19464541067. The reversal of 19464541057 is 75014546491.

It is a cyclic number.

It is not a de Polignac number, because 19464541057 - 2¹⁹ = 19464016769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19464540998 and 19464541016.

It is not an unprimeable number, because it can be changed into a prime (19464541067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473958 + ... + 1487104.

It is an arithmetic number, because the mean of its divisors is an integer number (1332405172).

Almost surely, 2^19464541057 is an apocalyptic number.

It is an amenable number.

19464541057 is a deficient number, since it is larger than the sum of its proper divisors (1853941695).

19464541057 is a wasteful number, since it uses less digits than its factorization.

19464541057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15088.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 19464541057 in words is "nineteen billion, four hundred sixty-four million, five hundred forty-one thousand, fifty-seven".