1092849840 has 80 divisors (see below), whose sum is σ = 3764268000. Its totient is φ = 291426048.

The previous prime is 1092849803. The next prime is 1092849841. The reversal of 1092849840 is 489482901.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1092849841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250815 + ... + 255134.

It is an arithmetic number, because the mean of its divisors is an integer number (47053350).

Almost surely, 2^1092849840 is an apocalyptic number.

1092849840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1092849840 is an abundant number, since it is smaller than the sum of its proper divisors (2671418160).

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

1092849840 is a wasteful number, since it uses less digits than its factorization.

1092849840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505971 (or 505959 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1092849840 is about 33058.2794470614. The cubic root of 1092849840 is about 1030.0385947143.

The spelling of 1092849840 in words is "one billion, ninety-two million, eight hundred forty-nine thousand, eight hundred forty".