1011650688 has 256 divisors, whose sum is σ = 3221078400. Its totient is φ = 311427072.

The previous prime is 1011650681. The next prime is 1011650713. The reversal of 1011650688 is 8860561101.

It is a super-2 number, since 2×1011650688² = 2046874229061746688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1011650681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3936256 + ... + 3936512.

Almost surely, 2^1011650688 is an apocalyptic number.

1011650688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011650688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610539200).

1011650688 is an abundant number, since it is smaller than the sum of its proper divisors (2209427712).

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

1011650688 is a wasteful number, since it uses less digits than its factorization.

1011650688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1011650688 is about 31806.4567030029. The cubic root of 1011650688 is about 1003.8685774761.

The spelling of 1011650688 in words is "one billion, eleven million, six hundred fifty thousand, six hundred eighty-eight".