1073198557 has 4 divisors (see below), whose sum is σ = 1073916000. Its totient is φ = 1072481116.

The previous prime is 1073198521. The next prime is 1073198573. The reversal of 1073198557 is 7558913701.

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.

It is a cyclic number.

It is not a de Polignac number, because 1073198557 - 2¹⁵ = 1073165789 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 (1073198597) 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, 356473 + ... + 359470.

It is an arithmetic number, because the mean of its divisors is an integer number (268479000).

Almost surely, 2^1073198557 is an apocalyptic number.

It is an amenable number.

1073198557 is a deficient number, since it is larger than the sum of its proper divisors (717443).

1073198557 is an equidigital number, since it uses as much as digits as its factorization.

1073198557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717442.

The product of its (nonzero) digits is 264600, while the sum is 46.

The square root of 1073198557 is about 32759.7093546326. The cubic root of 1073198557 is about 1023.8272709373.

The spelling of 1073198557 in words is "one billion, seventy-three million, one hundred ninety-eight thousand, five hundred fifty-seven".