1020905471 has 8 divisors (see below), whose sum is σ = 1103958720. Its totient is φ = 940407808.

The previous prime is 1020905449. The next prime is 1020905477. The reversal of 1020905471 is 1745090201.

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 1020905471 - 2¹⁴ = 1020889087 is a prime.

It is a super-3 number, since 3×1020905471³ (a number of 28 digits) contains 333 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 (1020905477) 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, 638066 + ... + 639663.

It is an arithmetic number, because the mean of its divisors is an integer number (137994840).

Almost surely, 2^1020905471 is an apocalyptic number.

1020905471 is a deficient number, since it is larger than the sum of its proper divisors (83053249).

1020905471 is a wasteful number, since it uses less digits than its factorization.

1020905471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277793.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1020905471 is about 31951.6113991141. The cubic root of 1020905471 is about 1006.9204867157.

Adding to 1020905471 its reverse (1745090201), we get a palindrome (2765995672).

The spelling of 1020905471 in words is "one billion, twenty million, nine hundred five thousand, four hundred seventy-one".