19312468045 has 8 divisors (see below), whose sum is σ = 24957651096. Its totient is φ = 14261514816.

The previous prime is 19312468039. The next prime is 19312468069. The reversal of 19312468045 is 54086421391.

It can be written as a sum of positive squares in 4 ways, for example, as 1402802116 + 17909665929 = 37454^2 + 133827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19312468045 - 2⁵ = 19312468013 is a prime.

It is a super-2 number, since 2×19312468045² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19312467992 and 19312468010.

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, 148557382 + ... + 148557511.

It is an arithmetic number, because the mean of its divisors is an integer number (3119706387).

Almost surely, 2^19312468045 is an apocalyptic number.

It is an amenable number.

19312468045 is a deficient number, since it is larger than the sum of its proper divisors (5645183051).

19312468045 is a wasteful number, since it uses less digits than its factorization.

19312468045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297114911.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 19312468045 in words is "nineteen billion, three hundred twelve million, four hundred sixty-eight thousand, forty-five".