1071025780 has 48 divisors (see below), whose sum is σ = 2513488320. Its totient is φ = 379961600.

The previous prime is 1071025759. The next prime is 1071025793. The reversal of 1071025780 is 875201701.

It is a happy number.

It is a super-2 number, since 2×1071025780² = 2294192442849216800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 50350 + ... + 68389.

It is an arithmetic number, because the mean of its divisors is an integer number (52364340).

Almost surely, 2^1071025780 is an apocalyptic number.

1071025780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1071025780 is an abundant number, since it is smaller than the sum of its proper divisors (1442462540).

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

1071025780 is a wasteful number, since it uses less digits than its factorization.

1071025780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118800 (or 118798 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 1071025780 is about 32726.5302163245. The cubic root of 1071025780 is about 1023.1358638403.

The spelling of 1071025780 in words is "one billion, seventy-one million, twenty-five thousand, seven hundred eighty".