1011971160 has 96 divisors (see below), whose sum is σ = 3462030000. Its totient is φ = 255654144.

The previous prime is 1011971117. The next prime is 1011971173. The reversal of 1011971160 is 611791101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67135 + ... + 80814.

Almost surely, 2^1011971160 is an apocalyptic number.

1011971160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011971160 is an abundant number, since it is smaller than the sum of its proper divisors (2450058840).

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

1011971160 is a wasteful number, since it uses less digits than its factorization.

1011971160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147985 (or 147978 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 27.

The square root of 1011971160 is about 31811.4941491279. The cubic root of 1011971160 is about 1003.9745685426.

The spelling of 1011971160 in words is "one billion, eleven million, nine hundred seventy-one thousand, one hundred sixty".