1023930557 has 4 divisors (see below), whose sum is σ = 1102694460. Its totient is φ = 945166656.

The previous prime is 1023930541. The next prime is 1023930559. The reversal of 1023930557 is 7550393201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185885956 + 838044601 = 13634^2 + 28949^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023930557 - 2⁴ = 1023930541 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 (1023930559) 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, 39381932 + ... + 39381957.

It is an arithmetic number, because the mean of its divisors is an integer number (275673615).

Almost surely, 2^1023930557 is an apocalyptic number.

It is an amenable number.

1023930557 is a deficient number, since it is larger than the sum of its proper divisors (78763903).

1023930557 is an equidigital number, since it uses as much as digits as its factorization.

1023930557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78763902.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 1023930557 is about 31998.9149347286. The cubic root of 1023930557 is about 1007.9140548442.

The spelling of 1023930557 in words is "one billion, twenty-three million, nine hundred thirty thousand, five hundred fifty-seven".