19535077198 has 32 divisors (see below), whose sum is σ = 36072046080. Its totient is φ = 7726600800.

The previous prime is 19535077141. The next prime is 19535077201. The reversal of 19535077198 is 89177053591.

It is a super-2 number, since 2×19535077198² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1383273 + ... + 1397323.

It is an arithmetic number, because the mean of its divisors is an integer number (1127251440).

Almost surely, 2^19535077198 is an apocalyptic number.

19535077198 is a deficient number, since it is larger than the sum of its proper divisors (16536968882).

19535077198 is a wasteful number, since it uses less digits than its factorization.

19535077198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21712.

The product of its (nonzero) digits is 2381400, while the sum is 55.

The spelling of 19535077198 in words is "nineteen billion, five hundred thirty-five million, seventy-seven thousand, one hundred ninety-eight".