1911704343644 has 12 divisors (see below), whose sum is σ = 3460844070600. Its totient is φ = 922891752048.

The previous prime is 1911704343517. The next prime is 1911704343649. The reversal of 1911704343644 is 4463434071191.

It is a super-2 number, since 2×1911704343644² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1911704343649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8240104814 + ... + 8240105045.

It is an arithmetic number, because the mean of its divisors is an integer number (288403672550).

Almost surely, 2^{1911704343644} is an apocalyptic number.

It is an amenable number.

1911704343644 is a deficient number, since it is larger than the sum of its proper divisors (1549139726956).

1911704343644 is a wasteful number, since it uses less digits than its factorization.

1911704343644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16480209892 (or 16480209890 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 1911704343644 in words is "one trillion, nine hundred eleven billion, seven hundred four million, three hundred forty-three thousand, six hundred forty-four".