1098773940 has 96 divisors (see below), whose sum is σ = 3502227456. Its totient is φ = 254784640.

The previous prime is 1098773927. The next prime is 1098773947. The reversal of 1098773940 is 493778901.

It is a self number, because there is not a number n which added to its sum of digits gives 1098773940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098773947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21012 + ... + 51371.

It is an arithmetic number, because the mean of its divisors is an integer number (36481536).

Almost surely, 2^1098773940 is an apocalyptic number.

1098773940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098773940 is an abundant number, since it is smaller than the sum of its proper divisors (2403453516).

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

1098773940 is a wasteful number, since it uses less digits than its factorization.

1098773940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72429 (or 72427 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1098773940 is about 33147.7592002838. The cubic root of 1098773940 is about 1031.8964464030.

The spelling of 1098773940 in words is "one billion, ninety-eight million, seven hundred seventy-three thousand, nine hundred forty".