1098915892 has 6 divisors (see below), whose sum is σ = 1923102818. Its totient is φ = 549457944.

The previous prime is 1098915877. The next prime is 1098915893. The reversal of 1098915892 is 2985198901.

It can be written as a sum of positive squares in only one way, i.e., 773618596 + 325297296 = 27814^2 + 18036^2 .

It is a super-2 number, since 2×1098915892² = 2415232275380311328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098915893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137364483 + ... + 137364490.

Almost surely, 2^1098915892 is an apocalyptic number.

It is an amenable number.

1098915892 is a deficient number, since it is larger than the sum of its proper divisors (824186926).

1098915892 is a wasteful number, since it uses less digits than its factorization.

1098915892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274728977 (or 274728975 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 52.

The square root of 1098915892 is about 33149.9003316752. The cubic root of 1098915892 is about 1031.9408818267.

The spelling of 1098915892 in words is "one billion, ninety-eight million, nine hundred fifteen thousand, eight hundred ninety-two".