1139268798 has 24 divisors (see below), whose sum is σ = 2575739088. Its totient is φ = 363244992.

The previous prime is 1139268791. The next prime is 1139268833. The reversal of 1139268798 is 8978629311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139268791) 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, 1375515 + ... + 1376342.

It is an arithmetic number, because the mean of its divisors is an integer number (107322462).

Almost surely, 2^1139268798 is an apocalyptic number.

1139268798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1139268798 is an abundant number, since it is smaller than the sum of its proper divisors (1436470290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139268798 is a wasteful number, since it uses less digits than its factorization.

1139268798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751888 (or 2751885 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 1139268798 is about 33753.0561282975. The cubic root of 1139268798 is about 1044.4205323491.

The spelling of 1139268798 in words is "one billion, one hundred thirty-nine million, two hundred sixty-eight thousand, seven hundred ninety-eight".