1911948272740 has 96 divisors (see below), whose sum is σ = 4611062615040. Its totient is φ = 658599984000.

The previous prime is 1911948272653. The next prime is 1911948272749. The reversal of 1911948272740 is 472728491191.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (1911948272749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86694715 + ... + 86716765.

It is an arithmetic number, because the mean of its divisors is an integer number (48031902240).

Almost surely, 2^{1911948272740} is an apocalyptic number.

1911948272740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1911948272740 is an abundant number, since it is smaller than the sum of its proper divisors (2699114342300).

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

1911948272740 is a wasteful number, since it uses less digits than its factorization.

1911948272740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42833 (or 42831 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 1911948272740 in words is "one trillion, nine hundred eleven billion, nine hundred forty-eight million, two hundred seventy-two thousand, seven hundred forty".