6191749998 has 120 divisors (see below), whose sum is σ = 16238941488. Its totient is φ = 1727345088.

The previous prime is 6191749957. The next prime is 6191750021. The reversal of 6191749998 is 8999471916.

6191749998 is a `hidden beast` number, since 619 + 1 + 7 + 4 + 9 + 9 + 9 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2095290 + ... + 2098242.

Almost surely, 2^6191749998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6191749998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8119470744).

6191749998 is an abundant number, since it is smaller than the sum of its proper divisors (10047191490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6191749998 is a wasteful number, since it uses less digits than its factorization.

6191749998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060 (or 3008 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 6191749998 is about 78687.6737361069. The cubic root of 6191749998 is about 1836.2753495784.

The spelling of 6191749998 in words is "six billion, one hundred ninety-one million, seven hundred forty-nine thousand, nine hundred ninety-eight".