1920922354993 has 4 divisors (see below), whose sum is σ = 1920925762560. Its totient is φ = 1920918947428.

The previous prime is 1920922354979. The next prime is 1920922354997. The reversal of 1920922354993 is 3994532290291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1920922354993 - 2⁵ = 1920922354961 is a prime.

It is a super-2 number, since 2×1920922354993² (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 (1920922354997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634513 + ... + 2060206.

It is an arithmetic number, because the mean of its divisors is an integer number (480231440640).

Almost surely, 2^{1920922354993} is an apocalyptic number.

It is an amenable number.

1920922354993 is a deficient number, since it is larger than the sum of its proper divisors (3407567).

1920922354993 is an equidigital number, since it uses as much as digits as its factorization.

1920922354993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407566.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 1920922354993 in words is "one trillion, nine hundred twenty billion, nine hundred twenty-two million, three hundred fifty-four thousand, nine hundred ninety-three".