1969920054 has 64 divisors (see below), whose sum is σ = 4590190080. Its totient is φ = 625030560.

The previous prime is 1969920047. The next prime is 1969920097. The reversal of 1969920054 is 4500299691.

It is a super-3 number, since 3×1969920054³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1969919991 and 1969920009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258304 + ... + 265820.

It is an arithmetic number, because the mean of its divisors is an integer number (71721720).

Almost surely, 2^1969920054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1969920054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295095040).

1969920054 is an abundant number, since it is smaller than the sum of its proper divisors (2620270026).

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

1969920054 is a wasteful number, since it uses less digits than its factorization.

1969920054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7756 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1969920054 is about 44383.7814297070. The cubic root of 1969920054 is about 1253.5727236412.

The spelling of 1969920054 in words is "one billion, nine hundred sixty-nine million, nine hundred twenty thousand, fifty-four".