1023193899 has 24 divisors (see below), whose sum is σ = 1819012832. Its totient is φ = 539706240.

The previous prime is 1023193889. The next prime is 1023193907. The reversal of 1023193899 is 9983913201.

It is a happy number.

It is not a de Polignac number, because 1023193899 - 2⁴ = 1023193883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023193849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623842 + ... + 625479.

Almost surely, 2^1023193899 is an apocalyptic number.

1023193899 is a deficient number, since it is larger than the sum of its proper divisors (795818933).

1023193899 is a wasteful number, since it uses less digits than its factorization.

1023193899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249347 (or 1249344 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1023193899 is about 31987.4021921131. The cubic root of 1023193899 is about 1007.6722851666.

The spelling of 1023193899 in words is "one billion, twenty-three million, one hundred ninety-three thousand, eight hundred ninety-nine".