1019598998 has 24 divisors (see below), whose sum is σ = 1683199056. Its totient is φ = 462868560.

The previous prime is 1019598997. The next prime is 1019599003. The reversal of 1019598998 is 8998959101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019598991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231836 + ... + 236192.

It is an arithmetic number, because the mean of its divisors is an integer number (70133294).

Almost surely, 2^1019598998 is an apocalyptic number.

1019598998 is a deficient number, since it is larger than the sum of its proper divisors (663600058).

1019598998 is a wasteful number, since it uses less digits than its factorization.

1019598998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348 (or 5337 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 59.

The square root of 1019598998 is about 31931.1602983669. The cubic root of 1019598998 is about 1006.4907779819.

The spelling of 1019598998 in words is "one billion, nineteen million, five hundred ninety-eight thousand, nine hundred ninety-eight".