2109694464 has 160 divisors (see below), whose sum is σ = 6310846080. Its totient is φ = 695808000.

The previous prime is 2109694451. The next prime is 2109694471. The reversal of 2109694464 is 4644969012.

2109694464 is a `hidden beast` number, since 2 + 10 + 96 + 94 + 464 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395469 + ... + 1396979.

It is an arithmetic number, because the mean of its divisors is an integer number (39442788).

Almost surely, 2^2109694464 is an apocalyptic number.

2109694464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2109694464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3155423040).

2109694464 is an abundant number, since it is smaller than the sum of its proper divisors (4201151616).

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

2109694464 is a wasteful number, since it uses less digits than its factorization.

2109694464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 2109694464 is about 45931.4104290299. The cubic root of 2109694464 is about 1282.5467005326.

The spelling of 2109694464 in words is "two billion, one hundred nine million, six hundred ninety-four thousand, four hundred sixty-four".