19091880740 has 48 divisors (see below), whose sum is σ = 40417755840. Its totient is φ = 7574985600.

The previous prime is 19091880739. The next prime is 19091880767. The reversal of 19091880740 is 4708819091.

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, 4031414 + ... + 4036146.

It is an arithmetic number, because the mean of its divisors is an integer number (842036580).

Almost surely, 2^19091880740 is an apocalyptic number.

19091880740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19091880740 is an abundant number, since it is smaller than the sum of its proper divisors (21325875100).

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

19091880740 is a wasteful number, since it uses less digits than its factorization.

19091880740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 19091880740 in words is "nineteen billion, ninety-one million, eight hundred eighty thousand, seven hundred forty".