1071861144 has 16 divisors (see below), whose sum is σ = 2679652920. Its totient is φ = 357287040.

The previous prime is 1071861127. The next prime is 1071861181. The reversal of 1071861144 is 4411681701.

It is a super-2 number, since 2×1071861144² = 2297772624033977472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22330417 + ... + 22330464.

Almost surely, 2^1071861144 is an apocalyptic number.

It is an amenable number.

1071861144 is an abundant number, since it is smaller than the sum of its proper divisors (1607791776).

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

1071861144 is a wasteful number, since it uses less digits than its factorization.

1071861144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44660890 (or 44660886 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 1071861144 is about 32739.2905237728. The cubic root of 1071861144 is about 1023.4017985389.

The spelling of 1071861144 in words is "one billion, seventy-one million, eight hundred sixty-one thousand, one hundred forty-four".