1011701620 has 24 divisors (see below), whose sum is σ = 2249549064. Its totient is φ = 380875776.

The previous prime is 1011701591. The next prime is 1011701623. The reversal of 1011701620 is 261071101.

It can be written as a sum of positive squares in 4 ways, for example, as 182952676 + 828748944 = 13526^2 + 28788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011701623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487457 + ... + 1488136.

It is an arithmetic number, because the mean of its divisors is an integer number (93731211).

Almost surely, 2^1011701620 is an apocalyptic number.

1011701620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011701620 is an abundant number, since it is smaller than the sum of its proper divisors (1237847444).

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

1011701620 is a wasteful number, since it uses less digits than its factorization.

1011701620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975619 (or 2975617 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1011701620 is about 31807.2573479701. The cubic root of 1011701620 is about 1003.8854239288.

Adding to 1011701620 its reverse (261071101), we get a palindrome (1272772721).

The spelling of 1011701620 in words is "one billion, eleven million, seven hundred one thousand, six hundred twenty".