749319219864 has 192 divisors, whose sum is σ = 2119168396800. Its totient is φ = 239035200768.

The previous prime is 749319219829. The next prime is 749319219911. The reversal of 749319219864 is 468912913947.

749319219864 is a `hidden beast` number, since 7 + 49 + 319 + 219 + 8 + 64 = 666.

It is a super-2 number, since 2×749319219864² (a number of 25 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 47 ways as a sum of consecutive naturals, for example, 25006539 + ... + 25036485.

It is an arithmetic number, because the mean of its divisors is an integer number (11037335400).

Almost surely, 2^749319219864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749319219864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059584198400).

749319219864 is an abundant number, since it is smaller than the sum of its proper divisors (1369849176936).

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

749319219864 is a wasteful number, since it uses less digits than its factorization.

749319219864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30174 (or 30167 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 749319219864 in words is "seven hundred forty-nine billion, three hundred nineteen million, two hundred nineteen thousand, eight hundred sixty-four".