1920151455191 has 8 divisors (see below), whose sum is σ = 1923586496640. Its totient is φ = 1916719384888.

The previous prime is 1920151455163. The next prime is 1920151455199. The reversal of 1920151455191 is 1915541510291.

It is a happy number.

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 1920151455191 - 2¹⁰ = 1920151454167 is a prime.

It is a super-2 number, since 2×1920151455191² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920151455199) 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 7 ways as a sum of consecutive naturals, for example, 552920 + ... + 2036178.

It is an arithmetic number, because the mean of its divisors is an integer number (240448312080).

Almost surely, 2^{1920151455191} is an apocalyptic number.

1920151455191 is a deficient number, since it is larger than the sum of its proper divisors (3435041449).

1920151455191 is a wasteful number, since it uses less digits than its factorization.

1920151455191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485573.

The product of its (nonzero) digits is 81000, while the sum is 44.

The spelling of 1920151455191 in words is "one trillion, nine hundred twenty billion, one hundred fifty-one million, four hundred fifty-five thousand, one hundred ninety-one".