1922553391 has 12 divisors (see below), whose sum is σ = 2126700856. Its totient is φ = 1736626320.

The previous prime is 1922553389. The next prime is 1922553419. The reversal of 1922553391 is 1933552291.

It is not a de Polignac number, because 1922553391 - 2¹ = 1922553389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922551391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31605 + ... + 69598.

Almost surely, 2^1922553391 is an apocalyptic number.

1922553391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1922553391 is a deficient number, since it is larger than the sum of its proper divisors (204147465).

1922553391 is a wasteful number, since it uses less digits than its factorization.

1922553391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101382 (or 101371 counting only the distinct ones).

The product of its digits is 72900, while the sum is 40.

The square root of 1922553391 is about 43846.9313749548. The cubic root of 1922553391 is about 1243.4437291178.

The spelling of 1922553391 in words is "one billion, nine hundred twenty-two million, five hundred fifty-three thousand, three hundred ninety-one".