1083399657 has 4 divisors (see below), whose sum is σ = 1444532880. Its totient is φ = 722266436.

The previous prime is 1083399637. The next prime is 1083399671. The reversal of 1083399657 is 7569933801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7569933801 = 3 ⋅2523311267.

It is a cyclic number.

It is not a de Polignac number, because 1083399657 - 2⁷ = 1083399529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1083399617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180566607 + ... + 180566612.

It is an arithmetic number, because the mean of its divisors is an integer number (361133220).

Almost surely, 2^1083399657 is an apocalyptic number.

It is an amenable number.

1083399657 is a deficient number, since it is larger than the sum of its proper divisors (361133223).

1083399657 is an equidigital number, since it uses as much as digits as its factorization.

1083399657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361133222.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 1083399657 is about 32915.0369436220. The cubic root of 1083399657 is about 1027.0609832926.

The spelling of 1083399657 in words is "one billion, eighty-three million, three hundred ninety-nine thousand, six hundred fifty-seven".