1098154992 has 40 divisors (see below), whose sum is σ = 3094801920. Its totient is φ = 332774080.

The previous prime is 1098154973. The next prime is 1098155077. The reversal of 1098154992 is 2994518901.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 1039392 + ... + 1040447.

It is an arithmetic number, because the mean of its divisors is an integer number (77370048).

Almost surely, 2^1098154992 is an apocalyptic number.

1098154992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1098154992 is an abundant number, since it is smaller than the sum of its proper divisors (1996646928).

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

1098154992 is a wasteful number, since it uses less digits than its factorization.

1098154992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079861 (or 2079855 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 1098154992 is about 33138.4216884269. The cubic root of 1098154992 is about 1031.7026515490.

It can be divided in two parts, 10981549 and 92, that added together give a triangular number (10981641 = T₄₆₈₆).

The spelling of 1098154992 in words is "one billion, ninety-eight million, one hundred fifty-four thousand, nine hundred ninety-two".