1920190919291 has 8 divisors (see below), whose sum is σ = 1929164049120. Its totient is φ = 1911230456832.

The previous prime is 1920190919287. The next prime is 1920190919347. The reversal of 1920190919291 is 1929190910291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1920190919291 - 2² = 1920190919287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920190912291) 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, 2862896 + ... + 3469373.

It is an arithmetic number, because the mean of its divisors is an integer number (241145506140).

Almost surely, 2^{1920190919291} is an apocalyptic number.

1920190919291 is a deficient number, since it is larger than the sum of its proper divisors (8973129829).

1920190919291 is a wasteful number, since it uses less digits than its factorization.

1920190919291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333685.

The product of its (nonzero) digits is 236196, while the sum is 53.

The spelling of 1920190919291 in words is "one trillion, nine hundred twenty billion, one hundred ninety million, nine hundred nineteen thousand, two hundred ninety-one".