1011597389 has 6 divisors (see below), whose sum is σ = 1111921230. Its totient is φ = 919633880.

The previous prime is 1011597371. The next prime is 1011597409. The reversal of 1011597389 is 9837951101.

It can be written as a sum of positive squares in only one way, i.e., 560884489 + 450712900 = 23683^2 + 21230^2 .

It is not a de Polignac number, because 1011597389 - 2¹⁶ = 1011531853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011597889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4180034 + ... + 4180275.

It is an arithmetic number, because the mean of its divisors is an integer number (185320205).

Almost surely, 2^1011597389 is an apocalyptic number.

It is an amenable number.

1011597389 is a deficient number, since it is larger than the sum of its proper divisors (100323841).

1011597389 is an equidigital number, since it uses as much as digits as its factorization.

1011597389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8360331 (or 8360320 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 44.

The square root of 1011597389 is about 31805.6188274965. The cubic root of 1011597389 is about 1003.8509475004.

The spelling of 1011597389 in words is "one billion, eleven million, five hundred ninety-seven thousand, three hundred eighty-nine".