19308869494 has 16 divisors (see below), whose sum is σ = 30409239600. Its totient is φ = 9182394144.

The previous prime is 19308869483. The next prime is 19308869507. The reversal of 19308869494 is 49496880391.

It is a super-2 number, since 2×19308869494² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480529 + ... + 2488300.

It is an arithmetic number, because the mean of its divisors is an integer number (1900577475).

Almost surely, 2^19308869494 is an apocalyptic number.

19308869494 is a deficient number, since it is larger than the sum of its proper divisors (11100370106).

19308869494 is a wasteful number, since it uses less digits than its factorization.

19308869494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968927.

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 19308869494 in words is "nineteen billion, three hundred eight million, eight hundred sixty-nine thousand, four hundred ninety-four".