1911282937481 has 16 divisors (see below), whose sum is σ = 2011014000000. Its totient is φ = 1813816601856.

The previous prime is 1911282937463. The next prime is 1911282937567. The reversal of 1911282937481 is 1847392821191.

It is a happy number.

It is not a de Polignac number, because 1911282937481 - 2¹⁰ = 1911282936457 is a prime.

It is a super-2 number, since 2×1911282937481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1911282937981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11344145 + ... + 11511393.

It is an arithmetic number, because the mean of its divisors is an integer number (125688375000).

Almost surely, 2^{1911282937481} is an apocalyptic number.

It is an amenable number.

1911282937481 is a deficient number, since it is larger than the sum of its proper divisors (99731062519).

1911282937481 is a wasteful number, since it uses less digits than its factorization.

1911282937481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174016.

The product of its digits is 1741824, while the sum is 56.

The spelling of 1911282937481 in words is "one trillion, nine hundred eleven billion, two hundred eighty-two million, nine hundred thirty-seven thousand, four hundred eighty-one".