1098127772 has 24 divisors (see below), whose sum is σ = 2204375040. Its totient is φ = 468886320.

The previous prime is 1098127763. The next prime is 1098127799. The reversal of 1098127772 is 2777218901.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64772 + ... + 79947.

It is an arithmetic number, because the mean of its divisors is an integer number (91848960).

Almost surely, 2^1098127772 is an apocalyptic number.

It is an amenable number.

1098127772 is an abundant number, since it is smaller than the sum of its proper divisors (1106247268).

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

1098127772 is a wasteful number, since it uses less digits than its factorization.

1098127772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145001 (or 144999 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 44.

The square root of 1098127772 is about 33138.0109843666. The cubic root of 1098127772 is about 1031.6941271973.

The spelling of 1098127772 in words is "one billion, ninety-eight million, one hundred twenty-seven thousand, seven hundred seventy-two".