1911342272 has 56 divisors (see below), whose sum is σ = 4353031680. Its totient is φ = 815673600.

The previous prime is 1911342271. The next prime is 1911342289. The reversal of 1911342272 is 2722431191.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1911342271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98147 + ... + 115997.

Almost surely, 2^1911342272 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 1911342272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176515840).

1911342272 is an abundant number, since it is smaller than the sum of its proper divisors (2441689408).

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

1911342272 is a wasteful number, since it uses less digits than its factorization.

1911342272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18109 (or 18099 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1911342272 is about 43718.9006266169. The cubic root of 1911342272 is about 1241.0220224768.

The spelling of 1911342272 in words is "one billion, nine hundred eleven million, three hundred forty-two thousand, two hundred seventy-two".